Quantitative Ab...

Find the next term in the series.

6, 15, 35, 77, 143, ?

The average age of a five-member family 10 years ago was 25 years. Meanwhile, 2 children were born. At present, the number of members in this family is 7 and the average age of the family is 27 years. It is known that if the older child is 4 years older than the younger child, then what will be the age of the older child?

In ∆ABC, ∠B is a right angle, and D is the midpoint of the side AC. If AB = 6 cm, BC = 8cm, then the length of BD is:

The average of 60 results is 40 and the average of another 40 results is 60. What is the total average?

Mahesh asked 32 men to build his house in 20 days. 80% of the work got completed in just 12 days. So Mahesh removed some workers. Now, how many persons does he need to complete the remaining work in the decided time?

If x, y, and z are positive integers such that x < y < z, is x a factor of the odd integer z ?

(1) x and y are prime numbers, whose sum is a factor of 57

(2) z is a factor of 57

If the length of a rectangle is increased by 20% and the width is decreased by 20%, then the area?

A motor boat goes 12 km upstream and back again to the starting point in 40 minutes and 30 seconds. If the speed of the stream is 4 km/hr, then find the speed of the motorboat in downstream.

Select the correct combination of mathematical signs to replace ‘*’ signs and to balance the given equation:

78 * 3 * 4 * 36 * 140

Amit is younger than Arjun by 6 years. If the ratio of the ages of Amit and Arjun is 5:7, then what is the age of Amit(in years)?