Class 11

10. Permutations & Combinations question bank (Maths)

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Q1.

Number of 5 digit numbers divisible by 25 that can be formed using only the digits 1,2,3,4,5 and 0 taken five at a time is

(A)
2
(B)
32
(C)
42
(D)
52
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Q2.

In a unique hockey series between India & Pakistan, they decide to play on till a team wins 5 matches. The number of ways in which the series can be won by India, if no match ends in a draw is:

(A)
126
(B)
252
(C)
225
(D)
none
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