Replace the question mark with the correct number below.

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

What does this rebus mean?

O
N
C
E
TIME

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

Prove that the below maths equation is true.

8 + 8 = 91

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Which is faster, Heat or Cold ? Explain.