What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What has a ring but no finger?

Which English verb becomes past tense just by rearranging the letters?

Using exactly three matchsticks, can you divide the area into two equal parts?

Can you find out the missing number in the grid?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

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

(it's a funny riddle)

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?

Eight of us go fourth, not back, to protect our king from an attack. What are we?