Can you find out the total number of triangles in the given figure?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

What's the only room from which no one can enter or leave

What does this mean?

CCCCCCC

What do you see in the image below

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

Count the number of triangles in the picture below: