In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I have an eye but still cannot see.

Who am I?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

No matter how little or how much you use me, you change me every month. What am I?

Decode this picture on T-Shirt and tell what it says ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What can you catch but never throw?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).