I am an odd number. Take away a letter and I become even. What number am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

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?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

If eleven plus two equals one, what does nine plus five equal?

What number divided by 4 is the same as that number minus 4?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

With the help clues provided in the image, can you find the 5 digit key?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.