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?

How many words can a pen with half refill write?

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

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Solve the counting riddle by identifying the number of triangles in the given picture.

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Forwards I am heavy, backward I am not. What am I?

What is the coolest letter in the alphabet?