There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What has a ring but no finger?