MEDIUM
11th Odisha Board
IMPORTANT
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How many factors does 1155 have that are divisible by 3?

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Important Questions on Permutations and Combinations

MEDIUM
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 15
How many factors does 210 have ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 16
If n is a product of k distinct primes, what is the total number of factors of n ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 17
If m has the prime factor decomposition p1p2r1…r2pnrn what is the total number of factors of m (excluding 1) ?
MEDIUM
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 18
If 20! were multiplied out, how many consecutive zeros would it have on the right ?
MEDIUM
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 19
How many factors of 10000 end with a 5 on the right ?
MEDIUM
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 20
A man has 6 friends. In how many ways can he invite two or more to a dinner party?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 21
In how many ways can a student choose 5 courses out of 9 if 2 courses are compulsory?
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Elements of Mathematics Vol.1>Chapter 8 - Permutations and Combinations>EXERCISES 8 (c)>Q 22
In how many ways can a student choose five courses out of the courses C1,C2….C9, if C1, C2 arc compulsory and C6, C8 can not be taken together ?