How to Crack General Aptitude Interview

There are 12 boys and 15 girls, How many different dancing
groups can be formed.

Perimeter of front wheel =30, back wheel = 20. If front
wheel revolves 240 times. Howm many revolutions will the
back wheel take?

City A population is 68000, decreasing at a rate of 80 per
year City B having population 42000 increasing at a rate of
120 per Year. In how many years both the cities will have
same population

Two cars, 15 km apart one is turning at a speed of 50kmph
other at 40kmph . How will it take to two cars meet.

A person wants to buy 3 paise and 5 paise stamps costing
exactly one rupee. If he buys which of the following number
of stamps. he wont able to buy 3 paise stamps

Perimeter of the back wheel = 9 feet, front wheel = 7 feet
on a certain distance the front wheel gets 10 revolutions
more than back wheel . what is the distance?

An equilateral triangle of side 3 inch is given. How many
equilateral triangles of side 1 inch can be formed from it

Total distance is 120 km . Going by 60kmph and coming back by
40kmph what is the average speed?

The value of x is between 0 & 1 which is the larger?

A) x B) x^2 C) -x D) 1/x