What occurs twice in a week, once in a year but never in a day?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

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?

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

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

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

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

Take away the whole and some still remain. What is it?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?