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In a cross word puzzle 25 words ar...

In a cross word puzzle 25 words are to be gussed of which 5 words have each an alternative solution also . The number of possible solutiions is

A

56

B

64

C

150

D

`2^(25)xx2^(6)`

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The correct Answer is:
B
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-PRACTICE EXERCISE
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  6. In a packet there are m different books, n different pens and p differ...

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  7. The number of divisors of 2^(6)3^(5)5^(3)7^(4)11 is

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  8. The sum of divisores of 2^(5).3^(4) is

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  9. The number of positive divisors of 2 ^5 , 3^6 ,7^3 is

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  10. The number of all positive divisors of 2 ^5 , 3^4 , 5^3 is

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  11. Number of even proper divisors of 1008 is

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  12. The number of positive odd divisors of 216 is

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  13. The number of odd factors of 36000 is

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  15. The number of ways in which 1440 can be divided into two factors exclu...

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  16. The sum of odd divisors of 360 is

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  17. If one quarter of all three element subsets of the set A={a(1), a(2), ...

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  18. The number of subsets of the set A={a(1),a(2),………..a(n)} which contain...

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

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