John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

How many times can you subtract the number 5 from 25?

Be active and find the killer in the picture Riddle below.

Which country gets ill every time?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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

Identify the hidden meaning behind this picture?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

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?