Why do people go to bed?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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?

I have Rs.50 and I spend it in the way as below.