Can you spot the man between the coffee bean in the picture below ?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

You can hear me, but you can't touch or see me.

What am I?

What's a single-digit number with no value?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What has a bottom at the top?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Why is it very easy to weigh a fish?