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Find the number of zeros at the end of 130!.

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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
  1. Prove that if rlt=slt=n ,t h e n^n Ps is divisible by ^n Pr .

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  2. The number of even divisor of the number N=12600=2^3 3^2 5^2 7 is a. ...

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  3. Find the number of zeros at the end of 130!.

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  4. A candidate is required to answer 6 out of 10 questions, which are ...

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  5. Find the exponent of 3 in 100!

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  6. If "^10 Pr=5040 , find the value of r.

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  7. Statement 1: Number of ways of selecting 10 objects from 42 objects ...

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  8. Find the number of zeros at the end in product 5^6 .6^7 .7^8 .8^9 .9^(...

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  9. Statement 1: Number of ways in which Indian team (11 players) can ba...

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  10. In how any different ways can a set A of 3n elements be partitioned in...

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  11. Statement 1: When number of ways of arranging 21 objects of which r...

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  12. lf a ,b , in {1,2,3,4,5,6,}, find the number of ways aa n db can be ...

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  13. Statement 1: let E={1,2,3,4}a n dF={a ,b} Then the number of onto fu...

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  14. In how many ways can Rs. 16 be divided into 4 persons when none of the...

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  15. Lines 2x – by + 5 = 0 and ax + 3y = 2 are parallel. Find the relation ...

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  16. Find the number ordered pairs (x ,y)ifx ,y in {0,1,2,3, , 10}a n dif|...

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  17. Find the equation of the line passing through the point (2, – 5) and m...

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  18. n different toys have to be distributed among n children. Find the num...

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  19. Statement 1: The number of ways in which three distinct numbers can ...

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  20. Statement 1: Total number of five-digit numbers having all different...

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