[B].
[C].
[D].
Answer: Option C
Explanation:
| Required decimal = | 1 | = | 1 | = .00027 |
| 60 x 60 | 3600 |
[B].
[C].
[D].
Answer: Option D
Explanation:
Let the length of the train be x metres and its speed by y m/sec.
| Then, | x | = 8 x = 8y |
| y |
| Now, | x + 264 | = y |
| 20 |
8y + 264 = 20y
y = 22.
| Speed = 22 m/sec = | 22 x | 18 | km/hr = 79.2 km/hr. | ||
| 5 |
[B].
[C].
[D].
Answer: Option B
Explanation:
| Angle traced by hour hand in | 17 | hrs = | 360 | x | 17 | ° | = 255°. | ||
| 2 | 12 | 2 |
| Angle traced by min. hand in 30 min. = | 360 | x 30 | ° | = 180°. | ||
| 60 |
Required angle = (255 – 180)° = 75°.
[B].
| 6 | 2 | hours |
| 3 |
[C].
[D].
| 7 | 1 | hours |
| 2 |
Answer: Option C
Explanation:
| (A + B)’s 1 hour’s work = | 1 | + | 1 | = | 9 | = | 3 | . | ||
| 12 | 15 | 60 | 20 |
| (A + C)’s hour’s work = | 1 | + | 1 | = | 8 | = | 2 | . | ||
| 12 | 20 | 60 | 15 |
| Part filled in 2 hrs = | 3 | + | 2 | = | 17 | . | ||
| 20 | 15 | 60 |
| Part filled in 6 hrs = | 3 x | 17 | = | 17 | . | ||
| 60 | 20 |
| Remaining part = | 1 – | 17 | = | 3 | . | ||
| 20 | 20 |
| Now, it is the turn of A and B and | 3 | part is filled by A and B in 1 hour. |
| 20 |
Total time taken to fill the tank = (6 + 1) hrs = 7 hrs.
| 5 | 1 | % |
| 5 |
[B].
| 9 | 1 | % |
| 11 |
[C].
| 8 | 1 | % |
| 8 |
[D].
| 6 | 1 | % |
| 6 |
Answer: Option B
Explanation:
Let, B.D = Re. 1.
| Then, B.G. = Re. | 3 | . |
| 25 |
| T.D. = (B.D. – B.G.) = Re. | 1 – | 3 | = Re. | 22 | . | ||
| 25 | 25 |
| Sum = | 1 x (22/25) | = Rs. | 22 | . | ||
| 1-(22/25) | 3 |
| S.I. on Rs. | 22 | for 1 | 1 | years is Re. 1. |
| 3 | 2 |
| Rate = | 100 x 1 | % |
|
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[B].
[C].
[D].
Answer: Option D
Explanation:
(4 + 5 + 2) – (1 + 6 + 3) = 1, not divisible by 11.
(2 + 6 + 4) – (4 + 5 + 2) = 1, not divisible by 11.
(4 + 6 + 1) – (2 + 5 + 3) = 1, not divisible by 11.
(4 + 6 + 1) – (2 + 5 + 4) = 0, So, 415624 is divisible by 11.
[B].
[C].
[D].
Answer: Option D
Explanation:
| 1 ÷ 0.2 = | 1 | = | 10 | = 5; |
| 0.2 | 2 |
0.2 = 0.222…;
(0.2)2 = 0.04.
0.04 < 0.2 < 0.22….<5.
Since 0.04 is the least, so (0.2)2 is the least.