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Statement 1: The number of positive inte...

Statement 1: The number of positive integral solutions of `a b c=30` is 27.
Statement 2: Number of ways in which three prizes can be distributed among three persons is `3^3`
(a) Statement 1 and Statement 2 , both are correct. Statement 2 is correct explanation for Statement 1.
(b) Statement 1 and Statement 2 , both are correct. Statement 2 is not the correct explanation for Statement 1.
(c) Statement 1 is correct but Statement 2 is not correct.
(d) Statement 2 is correct but Statement 1 is not correct.

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Consider two circles x^2+y^2-4x-6y-8=0 and x^2+y^2-2x-3=0 Statement 1 : Both the circles intersect each other at two distinct points. Statement 2 : The sum of radii of the two circles is greater than the distance between their centers. (a) Statement 1 and Statement 2 , both are correct. Statement 2 is correct explanation for Statement 1. (b) Statement 1 and Statement 2 , both are correct. Statement 2 is not the correct explanation for Statement 1. (c) Statement 1 is correct but Statement 2 is not correct. (d) Statement 2 is correct but Statement 1 is not correct.

Statement 1: let E={1,2,3,4}a n dF={a ,b} Then the number of onto functions from EtoF is 14. Statement 2: Number of ways in which four distinct objects can be distributed into two different boxes is 14 if no box remains empty. (a) Statement 1 and Statement 2, both are correct. Statement 2 is the correct explanation for Statement 1 (b) Statement 1 and Statement 2, both are correct. Statement 2 is not the correct explanation for Statement 1 (c) Statement 1 is correct but Statement 2 is not correct. (d) Both Statement 1 and Statement 2 are not correct.

Statement 1: the number of ways of writing 1400 as a product of two positive integers is 12. Statement 2: 1400 is divisible by exactly three prime factors. (a) Statement 1 and Statement 2 , both are correct. Statement 2 is correct explanation for Statement 1. (b) Statement 1 and Statement 2 , both are correct. Statement 2 is not the correct explanation for Statement 1. (c) Statement 1 is correct but Statement 2 is not correct. (d) Statement 2 is correct but Statement 1 is not correct.

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Statement 1 : The area of the triangle formed by the points A(1000 ,1002),B(1001 ,1004),C(1002 ,1003) is the same as the area formed by the point A^(prime)(0,0),B^(prime)(1,2),C^(prime)(2,1) Statement 2 : The area of the triangle is constant with respect to the translation of axes. (a) Statement 1 and Statement 2, both are correct. Statement 2 is the correct explanation for Statement 1. (b) Statement 1 and Statement 2, both are correct. Statement 2 is not the correct explanation for Statement 1. (c) Statement 1 is correct but Statement 2 is not correct. (d) Statement 2 is correct but Statement 1 is not correct.

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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
  1. If P = 21(21^2-1^2)(21^2-2^2)(21^2-3^2)...............(21^2-10^2),t h ...

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  2. Statement 1: number of ways in which 10 identical toys can be distri...

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  3. Statement 1: The number of positive integral solutions of a b c=30 is ...

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  4. Prove by combinatorial argument that .^(n+1)Cr=^n Cr+^n C(r-1)dot

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  5. Prove that (n !)! is divisible by (n !)^((n-1)!)

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  6. Column I, Column II Number of straight lines joining any two of ...

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  7. If the number of selections of 6 different letters that can be made...

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  8. If n1 and n2 are five-digit numbers, find the total number of ways...

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  9. If n1a n dn2 are five-digit numbers, find the total number of ways ...

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  10. If a denotes the number of permutations of (x+2) things taken all at a...

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  11. If .^nPr = .^nP(r + 1) and .^nCr = .^nC(r-1) then the value of n + r...

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  12. Let n be the number of ways in which 5 boys and 5 girls can stand in a...

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  13. In how many ways can a pack of 52 cards divided in 4 sets, three of th...

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  14. Let f(n)=sum(r=0)^nsum(k=r)^n(kC r) Find the total number of divisor...

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  15. True or false: The product of any r consecutive natural numbers is al...

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  16. Statement 1: Number of zeros at the end of 50! is equal to 12. State...

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  17. Using permutation or otherwise, prove that (n^2)!/(n!)^n is an integer...

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  18. A number of 18 guests have to be seated, half on each side of a lon...

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  19. Ten persons numbered 1, 2,.....,10 play a chess tournament, each playe...

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  20. A box contains 2 white balls, 3 black balls & 4 red balls. In how many...

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