Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

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.

Find the smallest sentence with all the English alphabet.

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Identify the 10 differences between the two given pictures.

How could a baby fall out of a twenty-story building onto the ground and live?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Do you know who was buried in John's tomb?