Compound interest of Rs.4000 at 10% per annum for 1 1/2years will be (interest compounded half yearly).	Answers.
A) rs . 473	B) rs . 374	C) rs . 495	D) rs . 630	E) none of the above

Rationale: 10 % interest per annum will be 5 % interest half yearly for 3 terms ( 1 1 / 2 years ) so compound interest = 4000 [ 1 + ( 5 / 100 ) ] ^ 3 - 4000 = 4000 [ ( 21 / 20 ) ^ 3 - 1 ] = 4000 ( 9261 - 8000 ) / 8000 = 4 * 1261 / 8 = 630 answer : d
Answer: D