[B].
[C].
[D].
Answer: Option B
Explanation:
There are two series (10, 13, 16, 19) and (5, 10, 20, 40), one increasing by 3 and the other multiplied by 2.
[B].
[C].
[D].
Answer: Option D
Explanation:
Let the number be x.
| Then, | 1 | of | 1 | of x = 15 x = 15 x 3 x 4 = 180. |
| 3 | 4 |
| So, required number = | 3 | x 180 | = 54. | ||
| 10 |
Video Explanation: https://youtu.be/z49OUnzTnwY
[B].
[C].
[D].
Answer: Option C
Explanation:
Let savings in N.S.C and P.P.F. be Rs. x and Rs. (150000 – x) respectively. Then,
| 1 | x = | 1 | (150000 – x) |
| 3 | 2 |
| x | + | x | = 75000 | |
| 3 | 2 |
| 5x | = 75000 | |
| 6 |
| x = | 75000 x 6 | = 90000 |
| 5 |
Savings in Public Provident Fund = Rs. (150000 – 90000) = Rs. 60000
[B].
[C].
[D].
Answer: Option C
Explanation:
Each even term of the series is obtained by multiplying the previous term by 2.
2nd term = (1st term) x 2 = 6 x 2 = 12
4th term = (3rd term) x 2 = 48 x 2 = 96.
6th term = (5th term) x 2 = 384 x 2 =768.
4th term should be 96 instead of 100.
[B].
[C].
[D].
Answer: Option D
Explanation:
Required number = (L.C.M. of 12, 15, 20, 54) + 8
= 540 + 8
= 548.
[B].
[C].
[D].
Answer: Option E
Explanation:
Numbers must be (14)2, (13)2, (12)2, (11)2, (10)2, (9)2, (8)2.
So, 80 is wrong.
[B].
[C].
[D].
Answer: Option D
Explanation:
| Ratio of initial investments = | 7 | : | 4 | : | 6 | = 105 : 40 : 36. | ||
| 2 | 3 | 5 |
Let the initial investments be 105x, 40x and 36x.
| A : B : C = | 105x x 4 + | 150 | x 105x x 8 | : (40x x 12) : (36x x 12) | ||
| 100 |
= 1680x : 480x : 432x = 35 : 10 : 9.
| Hence, B’s share = Rs. | 21600 x | 10 | = Rs. 4000. | ||
| 54 |