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Number of non-trivial divisors of 1512 i...

Number of non-trivial divisors of 1512 is

A

10

B

20

C

30

D

40

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The correct Answer is:
C
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
  1. Given 5 different green dyes, 4 different blue dyes, 3 different red d...

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  2. For any integer nge1, the number of positive divisors of n is denoted ...

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  3. Number of non-trivial divisors of 1512 is

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  4. Number of even divisors of 1600 is

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  5. If N denotes the set of all positive integers and if : NtoN is defined...

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  6. The sum of the even divisors of 168 is

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  7. Number of odd proper divisors of 3^(p).6^(m).21^(n) is

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  8. The number of ways in which 1800 can be divided into two fact...

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  9. The number of ways in which 900 can be resolved as a product of two fa...

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  10. The number of subsets of {1,2,3,. . . .9} conatining at least one ...

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  11. At an election, a voter may vote for any number of candidates, not gre...

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  12. In a club election the number of contestants is one more than the numb...

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  13. The number of all three element subsets of set {a(1),a(2),a(3),..........

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  14. If 20% of three element subsets of the set {a(1),a(2),a(3),.......,a(n...

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  15. A set contains (2n + 1) elements. The number of subsets of the set whi...

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  16. A student is allowed to select atmost 'n' books from a collection of (...

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  17. There are 2n things out of which 'n' are alike and 'n' are different, ...

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  18. At an election 3 wards of a town are canvassed by 2, 3, 4 men respecti...

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  19. The set S={1,2,3….12} is to be partitioned into three sets A,BC of equ...

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  20. Total number of ways in which “2n' persons can be divided into ‘n’ cou...

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