I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

If six children and two dogs were under an umbrella, how come none of them got wet?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Can you name some countries which do not have the alphabet 'A' in them?

I’m tall when I’m young, and I’m short when I’m old. What am I?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

The more of this there is, the less you see. What is it?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'