Probability between two numbers chosen from 1 to 30.
$begingroup$
What is the probability that you choose an odd number or a multiple of six?
The same number can be chosen twice.
I was stuck on this problem earlier in class, and my teacher said the answer was 2/3, but I am convinced that would be the answer if only one integer was chosen. Could you work this out and show me how to solve this?
probability
asked May 6 '15 at 18:02
OSGOSG
31
$endgroup$
add a comment |
$begingroup$
What is the probability that you choose an odd number or a multiple of six?
The same number can be chosen twice.
I was stuck on this problem earlier in class, and my teacher said the answer was 2/3, but I am convinced that would be the answer if only one integer was chosen. Could you work this out and show me how to solve this?
probability
asked May 6 '15 at 18:02
OSGOSG
31
$endgroup$
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30
add a comment |
$begingroup$
What is the probability that you choose an odd number or a multiple of six?
The same number can be chosen twice.
I was stuck on this problem earlier in class, and my teacher said the answer was 2/3, but I am convinced that would be the answer if only one integer was chosen. Could you work this out and show me how to solve this?
probability
asked May 6 '15 at 18:02
OSGOSG
31
$endgroup$
What is the probability that you choose an odd number or a multiple of six?
The same number can be chosen twice.
I was stuck on this problem earlier in class, and my teacher said the answer was 2/3, but I am convinced that would be the answer if only one integer was chosen. Could you work this out and show me how to solve this?
probability
probability
asked May 6 '15 at 18:02
OSGOSG
31
asked May 6 '15 at 18:02
OSGOSG
31
asked May 6 '15 at 18:02
OSGOSG
31
asked May 6 '15 at 18:02
OSGOSG
31
asked May 6 '15 at 18:02
OSGOSG
31
31
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30
add a comment |
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
Count the odd numbers less than 30, call it $a$
Count the multiples of 6 less than 30, call it $b$
Then count the odd numbers which are multiples of 6 and are less than 30, call it $c$
Your probability will be $frac{a}{30} + frac{b}{30} -frac{c}{30}$
You get it?
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "69"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f1270199%2fprobability-between-two-numbers-chosen-from-1-to-30%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Count the odd numbers less than 30, call it $a$
Count the multiples of 6 less than 30, call it $b$
Then count the odd numbers which are multiples of 6 and are less than 30, call it $c$
Your probability will be $frac{a}{30} + frac{b}{30} -frac{c}{30}$
You get it?
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
$endgroup$
add a comment |
$begingroup$
Count the odd numbers less than 30, call it $a$
Count the multiples of 6 less than 30, call it $b$
Then count the odd numbers which are multiples of 6 and are less than 30, call it $c$
Your probability will be $frac{a}{30} + frac{b}{30} -frac{c}{30}$
You get it?
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
$endgroup$
add a comment |
$begingroup$
Count the odd numbers less than 30, call it $a$
Count the multiples of 6 less than 30, call it $b$
Then count the odd numbers which are multiples of 6 and are less than 30, call it $c$
Your probability will be $frac{a}{30} + frac{b}{30} -frac{c}{30}$
You get it?
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
$endgroup$
Count the odd numbers less than 30, call it $a$
Count the multiples of 6 less than 30, call it $b$
Then count the odd numbers which are multiples of 6 and are less than 30, call it $c$
Your probability will be $frac{a}{30} + frac{b}{30} -frac{c}{30}$
You get it?
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
edited May 10 '15 at 17:37
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
answered May 6 '15 at 18:14
Luis FelipeLuis Felipe
1,597829
1,597829
add a comment |
add a comment |
Thanks for contributing an answer to Mathematics Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f1270199%2fprobability-between-two-numbers-chosen-from-1-to-30%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
$begingroup$
Of the integers ${ 1, 2, ..., 29, 30 }$ how many are odd or multiples of $6$?
$endgroup$
– Simon S
May 6 '15 at 18:06
$begingroup$
You choose 2 numers from 1 to 30? Your question is what is the probability that one number is either an odd number or a multiple of 6?
$endgroup$
– SebiSebi
May 6 '15 at 18:06
$begingroup$
The question is asking if a single number is chosen from the set ${1, 2, 3, ldots, 30}$, what is the probability that the number is odd or a multiple of six? Try working out the details, then show us your solution so that we can check it.
$endgroup$
– N. F. Taussig
May 6 '15 at 18:11
$begingroup$
Ok, so there is an issue in semantics here. My teacher makes her own tests, and this one just didn't make sense to me.
$endgroup$
– OSG
May 6 '15 at 18:30