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

Which letter of the alphabet has the most water?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

O_er_t_o_

Complete the missing letters of the given word.

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

What kind of storm is always in a rush?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?