A. 1080
B. 1085
C. 1075
D. 1095
LCM = 120
120) 1000 (8
960
——-
40
1000 + 120 – 40 = 1080
A. 18 πr2 sq units
B. 3 πr2 sq units
C. 12 πr2 sq units
D. 6 πr2 sq units
2 * π * 2r * 3r = 12 πr2
A. 9!/(2!)2 3!
B. 9!/(2!)3 3!
C. 9!/(2!)2 (3!)2
D. 5!/(2!)2 3!
Explanation:
n items of which p are alike of one kind, q alike of the other, r alike of another kind and the remaining are distinct can be arranged in a row in n!/p!q!r! ways.
The letter pattern ‘MESMERISE’ consists of 10 letters of which there are 2M’s, 3E’s, 2S’s and 1I and 1R.
Number of arrangements = 9!/(2!)2 3!
A. 35%
B. 38%
C. 32%
D. 29%
E. None of these
Explanation:
Let the CP of an article be Rs. 100
Given that successive discounts are 20% and 15%.
SP = 85% of 80% of 100 = (85/100)(80/100)(100)
=> SP = Rs. 68
Clearly, single discount is 32%.
A. Rs. 2.50
B. Rs. 3
C. Rs. 3.75
D. Rs. 4
A. 6 days
B. 8 days
C. 10 days
D. 12 days
2 children = 1 man
(8 children + 12 men ) = 16 men
Now, less men, more days
12 : 16 : 9 : x
x = 16×9/12=12 days
A. 121 km
B. 242 km
C. 224 km
D. 112 km