If 21x = 79x, what is the value of x?

Find the hidden tiger in the given optical illusion ?

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?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

what does the below rebus mean?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What seven-letter word has hundreds of letters in it?

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

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?