CBSE - Aptitude Mathematics

19% of 28 is equal to 1. 0.0532 2. 0.532 3. 5.32 4. 53.2

Standard deviation is also called 1. average square deviation 2. mean square deviation 3. root mean square deviation 4. none of these

20 men complete one-third of a piece of work in 20 days. How many more men should be employed to finish the rest of the work in 25 more days? 1. 10 2. 12 3. 15 4. 20

Two numbers are in the ratio of 15 : 11. If their H.C.F. is 13, then the no.s are: (1) 75 and 55 . (2) 105 and 77 (3) 11 and 15 (4) 195 and 143

In a flight of 3000 km, an aircraft was slowed down by bad weather. Its average speed for the trip was reduced by 100 km/hour and the time increased by one hour. Find the original duration of the flight. 1. 5 hours 2. 6 hours 3. 4 hours 4. 10 hours