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

I can write cow in 13 letters.

Can You?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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.

What is common among 11, 69, and 88?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

Can you solve the below geography rebus by decoding the below rebus ?