I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

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?

Find the next number in the series below.

6 18 270 72090 ?

You need to remove two matchsticks to make the below equation true. Can you do it ?

What has many keys but can’t open a single lock?

Why are televisions attracted to people?

Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

What word is pronounced the same if you take away four of its five letters?

What is the word or phrase below?
R | E | A | D

Can you guess the name of the month by looking the below rebus ?