Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

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?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

What word begins and ends with an E, but has only one letter?

How can you make number one disappear by adding something to it?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..