CBSE - Aptitude Mathematics

The L.C.M of three different numbers is 120. Which of the following cannot be their H.C.F.? 1. 8 2. 12 3. 24 4. 30

In the following number series there is a wrong number. Find out that number 56, 72, 90, 108,132. 1. 72 2. 132 3. 108 4. None of these

The sum of upper class boundary and the lower class boundary divided by two is called 1. midway value 2. true class limits 3. frequency value 4. class size

The sum of numbers from 401 to 500 is 1. 50,100 2. 45,050 3. 44,400 4. 43,820

If (a - b) is 6 more than (c + d), and (a + b) is 3 less than (c - d); then (a - c) is 1) 0.5 . 2) 1.0 3) 1.5 . 4) 2.0