Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

Replace the question mark with the correct number in the below-given picture?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?