John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

In a school, 280 students studied chemistry, 254 students studied physics and 280 students studied biology.

97 students studied chemistry as well as physics, 138 students studied physics as well as biology and 152 students studied chemistry as well as biology.

73 students studied all the three branches.

Can you find out the total number of students?

Replace the question mark with the correct number in the below-given picture?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Can you place six X (crosses) in below board without making three in a row in any way ?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

The dirtier I get, the whiter I look. Who am I?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?