Quantitative Aptitude (Numerical Ability)

Q. Raghu's tanker can fill a cistern in 4 hours. After half the cistern is filled, three more similar tankers are opened. What is the total time taken to fill the cistern completely?
1) 2 h
2) 2 h 30 min
3) 2 h 4 min
4) 3 h

Q. A and B can complete a task in 20 days, B and C can complete it in 30 days while C and A can do the same task together in 24 days. How many days will each of B and C take to complete the task individually?
1) 56 and 64
2) 48 and 80
3) 50 and 54
4) 54 and 72

Q. A fan was sold for Rs. 3,600 at a loss of 4%. What would be the gain or loss per cent if it was sold for Rs. 4,200?
1) Loss 12%
2) Gain 12%
3) Loss 10%
4) Gain 10%

Q. How many of the factors of 256 are perfect squares?
1) 3
2) 6
3) 5
4) 4

Q. To draw a pair of tangents to a circle which are inclined to each other at an angle of 75°ree;, it is required to draw tangents at the end points of those two radii of the circle, the angle between whom is.
1) 105°ree;
2) 65°ree;
3) 95°ree;
4) 75°ree;