Quantitative Aptitude - Arithmetic Ability Questions

4 men can build a small house in 12 days. How long would it take for 6 men to build the same house?

 Find the volume (in cm3) of a hemisphere of diameter 42 cm.

In the following question, select the odd letter/letters from the given alternatives.

In ΔABC measure of angle B is 90 deg. If tanA = 15/8, and AB = 0.8 cm, then what is the length (in cm) of side AC?

What is the value of 643 × 121289 - 169 ?

If M = (3/7) ÷ (6/5) × (2/3) + (1/5) × (3/2) and N = (2/5) × (5/6) ÷ (1/3) + (3/5) × (2/3) ÷ (3/5), then what is the value of M/N?

M borrowed some money for 1 year at certain simple interest. But the interest rate was increased to 2% which amounted to Rs.120. Find the principal amount.

The denominator of a rational number exceeds its numerator by 10. If the numerator is increased by 4 and the denominator is reduced by3, the number obtained is 5/6. The original rational number is