[B].
[C].
[D].
Answer: Option B
Explanation:
Each number is double the preceding one plus 1.
So, the next number is (255 x 2) + 1 = 511.
[B].
[C].
[D].
Answer: Option C
Explanation:
| Number of bricks = | Volume of the wall | = | 800 x 600 x 22.5 | = 6400. | ||
| Volume of 1 brick | 25 x 11.25 x 6 |
| 13 | 1 | days |
| 3 |
[B].
[C].
[D].
Answer: Option A
Explanation:
| Work done by X in 8 days = | 1 | x 8 | = | 1 | . | ||
| 40 | 5 |
| Remaining work = | 1 – | 1 | = | 4 | . | ||
| 5 | 5 |
| Now, | 4 | work is done by Y in 16 days. |
| 5 |
| Whole work will be done by Y in | 16 x | 5 | = 20 days. | ||
| 4 |
| X’s 1 day’s work = | 1 | , Y’s 1 day’s work = | 1 | . |
| 40 | 20 |
| (X + Y)’s 1 day’s work = | 1 | + | 1 | = | 3 | . | ||
| 40 | 20 | 40 |
| Hence, X and Y will together complete the work in | 40 | = 13 | 1 | days. | ||
| 3 | 3 |
[B].
[C].
[D].
Answer: Option D
Explanation:
Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.
So, 165 is wrong.
A. 1 Year
B. 2 years
C. 3 Years
D. 4 Years
Explanation:
Time be t years 882 = 800 (1 +5/100) t
=> 882/800 =(21/20) t
(21/20) 2 = (21/20) t
=> t = 2 Therefore,
Time = 2 years
[B].
[C].
[D].
Answer: Option D
Explanation:
(C.P. of 17 balls) – (S.P. of 17 balls) = (C.P. of 5 balls)
C.P. of 12 balls = S.P. of 17 balls = Rs.720.
| C.P. of 1 ball = Rs. | 720 | = Rs. 60. | ||
| 12 |
[B].
[C].
[D].
Answer: Option C
Explanation:
For an income of Rs. 756, investment = Rs. 9000.
| For an income of Rs. | 21 | , investment = Rs. | 9000 | x | 21 | = Rs. 125. | ||
| 2 | 756 | 2 |
For a Rs. 100 stock, investment = Rs. 125.
| Market value of Rs. 100 stock = Rs. | 125 – | 1 | = Rs. 124.75 | ||
| 4 |