Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Can you count the number of triangles in the given figure?