1. Direction: In each of the following number series only one number is wrong. Find out the wrong number.
3, 12, 8, 19, 13, 32, 18, 42, 23, 52
A. 12
B. 19
C. 42
D. 32
E. None of these
Answer: Option B
2. Nisha is 15 years elder to Romi. If 5 years ago, Nisha was 3 times as old as Romi, then find Nisha’s present age.
A. 32.5 years
B. 27.5 years
C. 25 years
D. 24.9 years
Answer: Option B
3. A ship 77 km from the shore, springs a leak which admits to 9/4 tonnes of water in 11/2 minutes. 92 tonnes of water would sink it. But the pumps can throw out 12 tonnes of water per hour. Find the average rate of sailing so that the ship may just reach the shore as it begins to sink.
A. 10.5 km/hr
B. 11 km/hr
C. 10 km/hr
D. 12.5 km/hr
Answer: Option A
4. A mixture contains alcohol and water in the ratio 4 : 3. If 5 liters of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture.
Answer: Option A
5. A Batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.
Answer: Option B