When it's bad luck to meet a black cat?

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

There are 3 apples in the basket and you take away 2. How many apples do you have now?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

There are forty elephants and they have forty-fore heads. How can this be possible?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

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

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?