Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

What is the riddle which can be asked all day with a different correct answer each time.

If 21x = 79x, what is the value of x?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

How can you tell a raw egg from a hard-boiled egg?

Out of the nine cats that you can see in the picture, there are only two that are completely identical. Can you find them out?

Can you identify the famous TV character from the rebus below?