Prove that the below maths equation is true.

8 + 8 = 91

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

A man was convicted of a minor offence in Akbar court. Akbar decided to give him a chance. He asked him to give a statement. If the statement is true, he will be killed by lions and if it is false, he will be killed by trampling of wild elephants.

The convicted person requested help from Birbal and since the crime was not a big one, Birbal decided to help him. Whatever Birbal suggested impressed Kabir and he let the convicted person go.

What did Birbal suggest to the person?

10+10 and 11+11 can give you the same answer.

Explain how?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

What kind of storm is always in a rush?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?