CBSE - Aptitude Mathematics

Two parts of 351 which are in the ratio of 4 : 5 are ..... 1. 156, 195 2. 195, 156 3. 166, 195 4. none of these

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 car gets 20 miles per gallon of gas when it travels at 50 miles per hour. The car gets 12% fewer miles to the gallon at 60 miles per hour. How far can the car travel at 60 miles per hour on 11 gallons of gas? 1. 193. 6 miles 2. 195.1 miles 3. 200 miles 4. 204.3 miles

The average age of 12 students is 20 years. If the age of one more student is included, the average decreases by 1. What is the age of the new student? 1) 5 years 2) 7 years 3) 9 years 4) 11 years

25 years ago a man was four times as old as his son. wbose present age is 33 years. What is ihe present age of the father in terms of the years ? (1) 40 (2) 52 (3) 57 (4) 75