I have Rs.50 and I spend it in the way as below.

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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Two friends Smith and Andrew were talking about the bravery of their families. Smith told great stories about his courageous grandfather who fought for Britain in "World War I". Andrew told that his grandfather was so brave that in 1919 just after the war he was honoured with a bravery medal with the words "For our Courageous Soldiers In World War I" embedded into it. Smith knows that his friend is lying. How?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

When it's bad luck to meet a black cat?

What does below Rebus mean ?

esgg sgeg gegs gsge