What four weights can be used to balance from 1 to 30 pounds?

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

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

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

Find the smallest sentence with all the English alphabet.

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

A research team went to a village somewhere between the jungles of Africa. Luckily for them, they reached the day when quite an interesting custom was to be performed. The custom was performed once a year as they confirmed and was performed in order to collect the taxes from every male of the region.

The taxes were to be paid in the form of grains. Everyone must pay pounds of grain equaling his respective age. This means a 20-year-old will have to pay 20 pounds of grain and a 30-year-old will pay 30 pounds of grain and so on.

The chief who collects the tax has 7 weights and a large 2-pan scale to weigh. But there is another custom that the chief can weigh only three of the seven weights.

Can you find out the weights of the seven weights? Also, what is the maximum age of the man that can be weighed for the payment of taxes?

What is the word or phrase?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Find the next number in the series below

21 32 54 87 131 ?