CBSE - Aptitude Mathematics

A reduction of 15% in the price of a colour T.V. set brought down its price by Rs.1800. The original price of the set was 1. Rs.10,000 2. Rs.12,000 3. Rs.15,000 4. Rs.18,000

Rs.665 were divided among Nita, Rita and Gita in the proportion 2/3 : 3/4 : 4/5. Then Gita got 1. Rs.133 2. Rs.192 3. Rs.240 4. None of the above

What is the next number in the geometric progression 4, 12, 36? 1. 44 2. 60 3. 72 4. 108

The mean of the squares of the first n natural numbers is 1. n(n+2) (2n+1) 2. (n+1)(n-1) 3. (n+1) (2n+1) 4. none of the above

A boat goes 24 km upstream and 28 km downstream in 6 hours. If it goes 20 km upstream and 21 km downstream in 6 hours and 30 minutes, find the speed of the stream. 1. 10 km/h 2. 5 km/h 3. 4 km/h 4. 6 km/h