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?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Take one out and scratch my head, I am now black but once was red. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

What does this mathematical rebus means ?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

You bought me for dinner but never eat me. What am I?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I