Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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.