Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Using eight eights and addition only, can you make 1000?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Can you count the number of quadrilaterals in the picture below?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Find the next number in the series below

21 32 54 87 131 ?

How can a man go eight days without sleep?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?