Dear Reader,
Below are four problems dealing with average calculations.

Question 1

Dear Reader,
Below are 4 problems on LCM, you have to find a least number which satisfies the given conditions.

Question 1

Find the smallest 8-digit number which gives 15 as a remainder when divided by 38, 22 and 16.

a)10002004 b)10002015 c)10001919 d)10000015

Answer : c)10001919.

Solution :

Dear Reader,
Below are four problems on odd man out series with calculations on digits of the given numbers.

Question 1

891, 583, 176, 462, 154, 342, 330

a)176 b)462 c)342 d)891

Answer : c)342

Solution :

Dear Reader,
Below are three time and distance problems which you can expect in IBM and other companies placement tests.

Question 1

A car has to cover a distance of 750 km by travelling first 300 km at a speed of 75 km/hr and the remaining at a speed of 90 km/hr. Find the time taken by the car to cover the full distance.

Dear Reader,
Below are four problems on simplification dealing with number calculations.

Question 1

Evaluate (3.52 x 5.52 + 3.52 x 4.48) /(6.76² - 3.24²)

a)1 b)10.0 c)2 d)3.52

Answer : a)1

Solution :

Dear Reader,
Below are three word problems dealing with simple arithmetic calculations.

Question 1

For a book of 90 pages a novelist takes 1 hour for preparing the story and another 6 hour for writing. How much time will the novelist take to make 15 different story books of 600 pages?

a)700 hours b)500 hours c)450 hours d)550 hours

Dear Reader,
Below are four problems on series, you have to find the next number of the given series.

Question 1

-2, -2, -5, -8, -17, ?

a)-22 b)-32 c)-42 d)-26

Answer : b)-32

Solution :

Dear Reader,
Below are three problems based on Volume of the objects dealing with usual parameters.

Question 1

The half of the volume of water in a rectangular base tank is 2.52 cubic meters. Find the depth of the tank if the area of the base of the tank is 5600 square cm.

a)9m b)3m c)5m d)6.5m

Answer : a)9m

Solution :

Dear Reader,
Below are three problems on perfect power numbers.
Note that, " a perfect power is a positive integer that can be expressed as an integer power of another positive integer".

Question 1

If a^b = 121 and a and b are two integers then (a-1)^(b+1) is equal to :
a)1 b)0 c)100 d)1000

Answer : d)1000

Dear Reader,
Below are four sample problems on two digit numbers involving calculations on the digits of the number.

Question 1
If the digit in the ten's place of a two digit number is 3 less than the digit unit’s place and if the ratio of the sum of the digits of that number to that of the number is 1:4 then the number is:
a)32 b)34 c)36 d)38