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

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

Can you fill the blank with the correct number?

6 30 870 756030 _____

How many times can you subtract the number two from the number fifty?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Can you replace the question mark with the correct number in the below table sequence?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

You need to remove two matchsticks to make the below equation true. Can you do it ?