Building Puzzle

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




Similar Riddles

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Make the Square

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There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

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By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

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If one and a half boys, eat one and a half burgers in one and a half hours.

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Out of four images which one is the odd one out?

Odd one out

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A man is walking down a road with a basket of eggs. As he
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plus one-half of an egg.
He walks a little further and meets another person who buys
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After proceeding further he meets another person who buys
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what does the below rebus mean?

Puzzle Understanding

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Can you solve the maths in the below-given picture equation?

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Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

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Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.