In how many different ways can the letters of the word "BICYCLE" be rearrangement?
Options:
(A) 5040
(B) 5045
(C) 5140
(D) 5010
(E) 5020
--
Option 'A'
The total number of arrangements is
7P7 = 7! = 5040 So the answer is: (A).
-----
A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?
Options:
(A) 450
(B) 992
(C) 276
(D) 187
(E) 161
--
10 * 150 = 1500
3 * 100 + 5 * 150 = 1050
1500 1050 = 450 So the answer is: (A).
-----
5,9,16,28,48,__
Options:
(A) 79
(B) 80
(C) 81
(D) 82
(E) 83
--
(9+5) +2 = 16
(16+9) +3 = 28
(28+16)+4 = 48
(48+28)+5 = 81 So the answer is: (C).
-----