I’m tall when I’m young, and I’m short when I’m old. What am I?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Count the squares in the matchstick puzzle below?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

People make me, save me, change me, raise me. What am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

I add 5 to 9 and get 2. The answer is correct, so what am I?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?