q: What amount does Kiran get if he invests Rs. 18000 at 15% p.a. simple interest for four years?
Options:
(A) 29893
(B) 27773
(C) 29989
(D) 28800
(E) 29883
a: Simple interest = (18000 * 4 * 15)/100 = Rs. 10800
Amount = P + I = 18000 + 10800 = Rs. 28800 The answer is (D).
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q: If x is an even integer and y is an odd integer, which of the following is an even integer?
Options:
(A) x+y
(B) x+2y
(C) 3x+y
(D) x+y^2
(E) x+y+2
a: Plug in an even integer for x; in this case 2
Plug in an odd integer for y; in this case 1
2+1 = 3 Odd
2+(2*1) = 4 Even
(3*2)+1 = 6 + 1 = 7 Odd
2+(1^2) = 2 + 1 = 3 Odd
2+1+2 = 5 Odd The answer is (B).
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q: 252 can be expressed as a product of primes as :
Options:
(A) 2 x 2 x 3 x 3 x 7
(B) 2 x 2 x 2 x 3 x 7
(C) 3 x 3 x 3 x 3 x 7
(D) 2 x 3 x 3 x 3 x 7
(E) 2 x 3 x 7 x 3 x 2
a: 252 = 2 x 2 x 3 x 3 x 7. The answer is (A).
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q: The average of first six prime numbers greater than 3 is?
Options:
(A) 16
(B) 10
(C) 12
(D) 19
(E) 17.8
a:
5 + 7 +11 + 13 + 17 + 19 = 72/6 = 12 The answer is (C).
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