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The number of porper divisors of 2^(m)xx...

The number of porper divisors of `2^(m)xx6^(n)xx15^(p)` , is

A

`(m+n+1)(n+p+1)(p+1)`

B

`(m+n+1)(n+p+1)(p+1)-2`

C

`(m+n)(n+p)-2`

D

none of these

Text Solution

AI Generated Solution

To find the number of proper divisors of the expression \(2^m \times 6^n \times 15^p\), we can follow these steps: ### Step 1: Factor the expression First, we need to express \(6\) and \(15\) in terms of their prime factors: - \(6 = 2 \times 3\) - \(15 = 3 \times 5\) Thus, we can rewrite the original expression: ...
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OBJECTIVE RD SHARMA ENGLISH-PERMUTATIONS AND COMBINATIONS-Section I - Solved Mcqs
  1. The number of divisor of 4200, is

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  2. The number of proper divisors of 2520, is

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  3. The number of porper divisors of 2^(m)xx6^(n)xx15^(p) , is

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  4. The number of proper divisors of 1800, which are also divisible by 10,...

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  5. The number of even proper divisors of 5040, is

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  6. The number of odd proper divisors of 5040, is

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  7. Find the number of odd proper divisors of 3^pxx6^mxx21^ndot

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  8. The number of divisors of the form 4K + 2 , K ge 0 of the integers 24...

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  9. The number of divisors of 2^4 .3^3 .5^2, having two prime factors, is

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  10. There are five balls of different colours and five boxes of colours sa...

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  11. The number of 5-digit numbers in which no two consecutive digits are i...

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  12. Let A be a set of n(ge3) distinct elements. The number of triplets (x,...

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  13. Find the number of ways to give 16 different things to three persons A...

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  14. If P(1), P(2), P(3), ……, P(m+1) are distinct prime numbers. Then the...

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  15. There are n different books and p copies of each in a library. The num...

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  16. The number of ways in which one or more balls can be selected out of 1...

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

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

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  19. The sum of the divisors of 2^(5)*3^(4)*5^(2) is

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  20. The number of words that can be made by writing down the letters of th...

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