# Competitive Exams: Numerical Aptitude Questions (Practice_Test 1 of 12)

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- Let R = qs-4. When s = 8, R = 16. When s = 10, R is equal to
- 11
- 14
- 20
- 21

Answer: d

- If × 81- = 3x, the value of x is
- -1
- 0
- 1
- 2

Answer: b

- 0.333 × 0.444 is equal to
- 0.148148148
- 0.777
- 0.121212
- 1.333

Answer: a

- A car covers a distance of 715 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 2 hours less to cover the same distance. What is the original speed of the car?
- 45 km/hr
- 50 km/hr
- 55 km/hr
- 65 km/hr

Answer: c

- On converting the following base-2 numeral in base ten, 1101101, we get
- 96
- 104
- 108
- 109

Answer: d

- The number of prime factors of 6
^{10}× 7^{17}× 55^{27}- 54
- 64
- 81
- 91

Answer: d

- A train crosses a pole in 15 seconds, while it crosses 100 meter long platform in 25 seconds. The length of the train is-
- 125m
- 135 m
- 159 m
- 175 m

Answer: c

- Two taps A and B can fill a tank in 12 minutes and 15 minutes respectively. If both the taps are opened simultaneously and the tap A is closed after 3 minutes, then how much more time will it take to fill the tank by tap B?
- 7 min & 15 sec
- 7 min & 45 sec
- 8 min & 5 sec
- 8 min & 15 sec

Answer: d

- The milk and water in two vessels A and B are in the ratio 4: 3 and 2: 3 respectively. In what ratio, the liquids be mixed in both the vessels so that the new liquid contains half milk and half water?
- 7: 5
- 1: 2
- 2: 1
- 6: 5

Answer: a