Question

5. If a sum of money becomes ` 1,000 and ` 1,100 at the end of 2nd year and 3rd year respectively at a compound interest compounded annually, then rate of interest is (a) 5% (b) 8% (c) 9% (d) 10%.

6. For the binomial expansion of (a + x) n , number of middle terms become two if (a) n is even (b) n is odd (c) n is even and greater than two (d) n is odd and greater than two.

7. If nPr = 720 and nCr = 120, then n and r are respectively (a) 10, 3 (b) 3, 10 (c) 9, 3 (d) 3, 9.

8. The total no. of factors of 2700 except one are (a) 15 (b) 16 (c) 35 (d) 36.

9. Three sets A, B, C are such that A – B = {2, 5, 6}, A – C = {2, 4, 6}. Then A – (B C) is (a) {2} (b) {2, 4, 5, 6} (c) {2, 6} (d) {5, 4}.

10. If n(A) = 5 and n(B) = 7 and n (A B) = x, then (a) 0 < x < 5 (b) 0 < x < 7 (c) x = 5 (d) x < 5. [ n (Y) means total no. of elements in set Y ]
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Answer 1

Answer:

P×R×T

1000×10×1

=10000/100

=100

So the answer will be 10 percentage

option d

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