A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Different lights make me strange by changing me into different sizes. What am I?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

A man dies of old age on his 25 birthday. How is this possible?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

By moving just one matchstick, you need to make the below statement true. Can you do it?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Can you decode the below cypher?

896983327332676578