What does this mathematical rebus means ?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

Can you count the number of squares in the given picture?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What word does this rebus represent?

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