Can you replace the question mark with the correct number?

Through your logical capabilities, can you make 7 an even?

Find the missing number in the sequence below:

Prove that the below maths equation is true.

8 + 8 = 91

I am white when I am dirty, and black when I am clean. What am I?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

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

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?