[B].
[C].
[D].
Answer: Option C
Explanation:
Go on subtracting 3 and dividing the result by 2 to obtain the next number.
Clearly, 46 is wrong.
A. 18
B. 12
C. 9
D. 6
[B].
| 22 | 1 | days |
| 2 |
[C].
[D].
Answer: Option B
Explanation:
Ratio of times taken by A and B = 1 : 3.
The time difference is (3 – 1) 2 days while B take 3 days and A takes 1 day.
If difference of time is 2 days, B takes 3 days.
| If difference of time is 60 days, B takes | 3 | x 60 | = 90 days. | ||
| 2 |
So, A takes 30 days to do the work.
| A’s 1 day’s work = | 1 |
| 30 |
| B’s 1 day’s work = | 1 |
| 90 |
| (A + B)’s 1 day’s work = | 1 | + | 1 | = | 4 | = | 2 | ||
| 30 | 90 | 90 | 45 |
| A and B together can do the work in | 45 | = 22 | 1 | days. |
| 2 | 2 |
[B].
[C].
[D].
Answer: Option D
Explanation:
3251 Let 4207 – x = 3007
+ 587 Then, x = 4207 – 3007 = 1200
+ 369
—-
4207
—-
| 1 |
| 13 |
[B].
| 2 |
| 13 |
[C].
| 1 |
| 26 |
[D].
| 1 |
| 52 |
Answer: Option C
Explanation:
Here, n(S) = 52.
Let E = event of getting a queen of club or a king of heart.
Then, n(E) = 2.
| P(E) = | n(E) | = | 2 | = | 1 | . |
| n(S) | 52 | 26 |
[B].
[C].
[D].
Answer: Option A
Explanation:
132 = 4 x 3 x 11
So, if the number divisible by all the three number 4, 3 and 11, then the number is divisible by 132 also.
264 11,3,4 (/)
396 11,3,4 (/)
462 11,3 (X)
792 11,3,4 (/)
968 11,4 (X)
2178 11,3 (X)
5184 3,4 (X)
6336 11,3,4 (/)
Therefore the following numbers are divisible by 132 : 264, 396, 792 and 6336.
Required number of number = 4.
[B].
[C].
[D].
Answer: Option C
Explanation:
Given expression = (11.98)2 + (0.02)2 + 11.98 x x.
For the given expression to be a perfect square, we must have
11.98 x x = 2 x 11.98 x 0.02 or x = 0.04