Which is heavier: a ton of bricks or a ton of feathers?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Why do we preferably have round manhole covers and not square ones?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Can you count the number of triangles in the given picture?

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

What am I?

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

Replace the question mark with the correct number in below Picture:

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

In the image below, can you find the value of an angle(y)