How many times in a given day, minutes and hour clock comes in a straight line ?

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.

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Why is a river so rich ?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

Which alphabet is a part of our body?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?