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Combinations Free Doubts and Solutions

CBSE - XI Science - Mathematics - Permutations and Combinations

Help me to approach this questin's answer...

Asked by nitishkrnehu09 1st January 2018, 4:06 AM
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CBSE - XI Science - Mathematics - Permutations and Combinations

how many ways can the letter of word ARRANGE be arranged such that A's dont occur together
 
 

Asked by keerthanapradeep550 25th March 2017, 7:38 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

pls get me a clear answer for the question: 61c57 - 60c56= 60c3

Asked by keerthanapradeep550 25th March 2017, 7:27 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

A library membership allows 4 books to be borrowed at any given time. Rahul goes to the library and finds that he likes two books on a given shelf which contains 15 books in all. Rahul has decided that he would either take both the books or take none of these two. In how many ways can he select 4 books?

Asked by Topperlearning User 13th September 2016, 2:37 AM
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CBSE - XI Science - Mathematics - Permutations and Combinations

How many committies are often of 3girls and 5 boys, in which the 1 committie cotains 3 persons in which one is girl

Asked by aadeshpdabre 22nd February 2016, 4:28 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

In a mixed double match their were two teams named TEAM 1 and TEAM 2 in which the 5 married couples were participating then find :
1) total no. of ways in which the husand an wife should not come in one team ?
(plz explain in detail )

Asked by Ritusha Kulkarni 20th July 2014, 8:38 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

What is the number of ways in which a set of 5 cards can be chosen out of a deck of 52 cards if each set of 5 cards has exactly one ace? If five cards represent five life skills, name the life skills which you would always abide by.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

Find the number of ways of selecting 9 balls from 6 red balls, 5 black balls and 5 green balls if each selection consists of 3 balls of each color, assuming that the balls of same color are distinguishable.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

Determine the number of 5 card combination out of a deck of 52 cards if each selection of 5 cards has at least one king.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

In how many ways can a student choose a programme of 5 courses if 9 courses are available and 2 courses are compulsory for every student.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

How many triangles can be drawn through 10 points in a plane?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

What are the total number of proper divisors for 900?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

As a part of festive decoration, Mayank go to buy decorative lights. The shopkeeper shows him a box containing 8 flashlights, all of different colors. He only need 3. How many different sets of 3 flashlights can be chosen?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

There are 15 points in a plane, no more than 2 of which are collinear. How many pentagons in all can be made using these points?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

I have four currency notes valued at Rs 50,100 and 2 notes of 500.In how many ways can I select the currency note ,so that only one type of note is selected each time?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

Find n if

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Mathematics - Permutations and Combinations

in a football championship 153 matches were played. every team played one match with each other. the number of team participating in the championship

Asked by Piyush Gupta 9th August 2010, 12:00 AM
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