I’m tall when I’m young, and I’m short when I’m old. What am I?

What is harder to catch the faster you run?

Before Mount Everest was discovered, what was the highest mountain in the world?

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

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?