When can we add 2 to 11 and get 1 as the correct answer?

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

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

What is always in front of you but can’t be seen?

Find the next number in the series below

21 32 54 87 131 ?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

People make me, save me, change me, raise me. What am I?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?