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If the lines y = 3x + 7 and 2y + px = 3 ...

If the lines y = 3x + 7 and 2y + px = 3 perpendicular to each other, find the value of p

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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
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  2. In how many ways 3 boys and 15 girls can sits together in a row such ...

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  3. If the lines y = 3x + 7 and 2y + px = 3 perpendicular to each other, f...

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  4. If the 11 letters A, B, ..., K denote an arbitrary permutation of he ...

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  5. In how many ways can four people, each throwing a dice once, make a su...

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  9. In how many ways can four people, each throwing a dice once, make a su...

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  10. Find n ,if(n+1)! =12xx(n-1)!dot

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  11. Three numbers are in AP. If theirsum is 27 and their product is 648. F...

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  13. The number of polynomials of the form x^3 + ax^2 + bx + c which are di...

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  14. Find the number of diagonals in a polygon with n sides.

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  15. Find the total number of n -digit number (n >1) having property that n...

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  16. Prove that (n !)^2 < n^n n! < (2n)!, for all positive integers n.

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  17. Find the sum of the series sum(r=1)^n r/((r+1) !)dot

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  18. Find the exponent of 80 in 200!.

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  19. Prove that .^nPr = ^(n-1)Pr + r^(n-1)P(r-1)

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