9 - Probability Questions Answers

Maths >> Algebra >> Probability Others

Question 1:- what is the number of ways in which one can post 5 letters in 7 letter boxes?

(a) 75   (b)   35   (c) 57   (d) 2520 

Asked By: SWATI KAPOOR 4 year ago
is this question helpfull: 4 0 read solutions ( 1 ) | submit your answer
Maths >> Algebra >> Probability Others

1) There are 20 balls which are red,blue or green.If 7 balls are green & the sum of red balls & green balls is less than 13,atmost how many red balls are there?

2)A drawer holds 4 red hats & 4 blue hats.what is the probability of getting exactly three red hats or exactly three lue hats when taking out 4 hats randomly out of the drqwer & immediately returning every hat to the drawer before taking out the next?

3)In how many ways can we distribute 10 identical looking pencils to 4 students so that each students gets at least one pencil?

4)Mr &mrs smith have invited 9 of their friends & their spouses for a party at the waikki beach resort.they started for a group photograph.if Mr.smith never stands next to mrs smith(as he says they are always together otherwise).how many ways the group can be arranged in a row for the photograph?

Asked By: KUSHAL KUMAR 5 year ago
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Maths >> Algebra >> Probability Engineering Exam
Asked By: PRASANTH 5 year ago
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Maths >> Algebra >> Probability IIT JEE
Asked By: PRASANTH 5 year ago
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Maths >> Algebra >> Probability Engineering Exam

how to i know ,ece department  m4 maths in engineering.

Asked By: PRASANTH 5 year ago
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Maths >> Algebra >> Probability Others

We have to select 2 numbers from 1 to 9. Probability that the product of these 2 numbers is 12, will be

Asked By: MUHAMMAD NADEEM HAIDER NASEEM 6 year ago
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Maths >> Algebra >> Probability IIT JEE

Paddy is flipping a weighted coin, which displays heads with a probability of     . What is the expected number of coin flips he would need, in order to get a head?

Asked By: MUHAMMAD NADEEM HAIDER NASEEM 6 year ago
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Maths >> Algebra >> Probability Engineering Exam

total no.of methods to divide 52 cards in 4 groups  are x. what will be the value of x ?

Asked By: SYED ASHWAQ AHMED 6 year ago
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Maths >> Algebra >> Probability IIT JEE
A housewife buys a dozen eggs of which two turn out to be bad. She chooses four eggs for breakfast. Find thd chance that she chooses (1) all good eggs (2)three good and one bad (3)two good and two bad (4)at least one bad egg.
Asked By: SAHDEV SINGH 6 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

1)   (10/12)(9/11)(8/10)(7/9)

2)   4(10/12)(9/11)(8/10)(2/9)

3)   (4*3/2)(10/12)(9/11)(2/10)(1/9)

4)   1 - (10/12)(9/11)(8/10)(7/9)

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