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

No one wants to have it, but if one got it, he does not want to lose it. What is It?

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?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

John had a bag containing colourful marbles. The colours are red, green and blue. The total number of marbles he had in his bag was 60. There are 4 times as many red marbles as green marbles. 6 more blue marbles than green marbles. How many marbles of each colour did John have?

When 99 is considered higher than 100?

How do you go from 98 to 720 using just one letter?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.