Quantitative Aptitude - Arithmetic Ability Questions

A person goes from point N to P and comes back. His average speed for the whole journey is 60 km/hr. If his speed while going from N to P is 40 km/hr, then what will be the speed of the person (in km/hr) while coming back from P to N?

Krish is 5 years younger than Parthiv. Eight years ago three times the age of Krish was 10 more than twice the age of Parthiv. Find Krish's present age?

Find the value of  x3 - y3, if x - y = 4 and xy = 12.

Find the odd word/letters/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

Two students appeared for an examination. One of them secured 16 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

What least number must be subtracted from 3401, so that the sum is completely divisible by 11?

The radius of the circle is 14 cm, an arc is subtend an angle 54 degree at center. Find the length of the arc (in cm).