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

Which number comes next in the number series?

2, 9, 30, 93, ?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

When 99 is considered higher than 100?

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?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What is wrong in the below Picture?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

An old Woman left INR 33,333 to be divided equally among two fathers and two sons and each was to receive INR 11,111.
How was this possible?