A. 8
B. 8!
C. 7!
D. 7
Explanation:
Total number of letters = 8
Using these letters the number of 8 letters words formed is ⁸P₈ = 8!.
A. Rs.480
B. Rs.615
C. Rs.820
D. Rs.740
A. 18:11
B. 22:13
C. 23:12
D. 11:9
Explanation:
A invests Rs.8000 for 18 months, but B invests Rs.8000 for the first 4 months and then withdraws Rs.4000. So, the investment of B for remaining 14 months is Rs.4000 only.
A : B
8000*18 : (8000*4) + (4000*14)
14400 : 88000
A:B = 18:11
A. 9%
B. 10%
C. 11%
D. 12%
A. Rs. 3500
B. Rs. 4000
C. Rs. 4500
D. Rs. 5000
Let salary be Rs. x.
Then, x – 15 % of x – 30 % of 85 % of x = 2380
or x – 15x/100 – (30×85×x)/(100×100) = 2380
or 200 x – 30 x – 51 x = 2380 X 200
or 119 x = 2380 X 200
or x = (2380×200)/119 = 4000
A. 11 years
B. 14 years
C. 15 years
D. 15 2/7 years
Explanation:
Age of the 15th student=
[15 * 15 – (14 * 5 + 16 * 9)] = (225 – 214) = 11 years
A. 17
B. 29
C. 23
D. 31
Explanation:
(7429/12673) = 17/29 Fourth Number is 29