q: In how many different ways can the letters of the word 'PREPTY' be arranged?
Options:
(A) 220
(B) 250
(C) 276
(D) 320
(E) 360
a: OK... Number of ways = 61/21 6X5X4X3X2X1 - 360
The answer is (E).

q: At what rate percent on simple interest will a sum of money double itself in 30 years?
Options:
(A) 3 1/9%
(B) 3 7/3%
(C) 7 1/3%
(D) 5 1/3%
(E) 1 1/3%
a: OK... P = (P*30*R)/100
R = 3 1/3%
The answer is (A).

q: The average of five results is 46 and that of the first four is 45. The fifth result is?
Options:
(A) 22
(B) 02
(C) 78
(D) 50
(E) 18
a:
OK... 5 * 46 4 * 45 = 50
The answer is (D).