Prove that the below maths equation is true.

8 + 8 = 91

What does below Rebus mean ?

esgg sgeg gegs gsge

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

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

What will you call your mother's brother's brother-in-law?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?