Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What number should come in place of the question mark below?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

A man dies of old age on his 25 birthday. How is this possible?

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

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?