CBSE - Aptitude Mathematics

The transverse axis of a hyperbola is 2a. Its vertex bisects the distance between the center and the focus. Its equation is: 1. y - 3x = 4a 2. x - 3y = 3a 3. 3x - y = 3a 4. None of these

In an. examination, A got 10% marks less than B, B got 25% more than C and C got 20% less than D. If A got 360 out of 500, the % marks obtained by D was : 1) 70 2) 75 3) 80 4) 85

Price of desi ghee is increased by 33 1/3%. To avoid increase in the expenditure, the reduction in ghee consumption in a family should be 1. 33 1/3% 2. 16 2/3% 3. 25% 4. 37 1/2%

In the geometric mean of x, 16, 50, be 20, then the value x is: 1. 40 2. 20 3. 10 4. 4

The harmonic mean of 4, 8, 9 is: 1. 6.17 2. 1/21 3. 1/7 4. 7