q: How much more would Rs.50000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if is put at 20% p.a. compound interest payable yearly?
Options:
(A) 482
(B) 1205
(C) 992
(D) 837
(E) 923
a: Stream of consciousness: 50000(11/10)4 - 50000(6/5)2 = 1205 The answer is (B).
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q: What is the greatest positive integer x such that 5^x is a factor of 125^10?
Options:
(A) 5
(B) 9
(C) 10
(D) 20
(E) 30
a: Stream of consciousness: 125^10 = (5^3)^10 = 5^30 The answer is (E).
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q: The difference between the place value and the face value of 6 in the numeral 856973 is
Options:
(A) 5994
(B) 6973
(C) 973
(D) 1000
(E) 7000
a:
Stream of consciousness: (Place value of 6) - (Face value of 6) = (6000 - 6) = 5994 The answer is (A).
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