Can you name some countries which do not have the alphabet 'A' in them?

Can you count the number of blocks in the picture below?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Why is a river so rich ?

Different lights make me strange by changing me into different sizes. What am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

What is red and smells like blue paint?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H