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

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Asked by Neha on 04 Jul 2023


Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Asked by Neha on 17 Jun 2024

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Asked by Neha on 09 Dec 2025


You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

Asked by Neha on 31 Jan 2025

What is the next number in the series?

15 29 56 108 208 ?

Asked by Neha on 27 Dec 2024

What has one letter and starts with an E?

Asked by Neha on 18 Dec 2024


Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

Asked by Neha on 14 Apr 2023

If eleven plus two equals one, what does nine plus five equal?

Asked by Neha on 28 Mar 2022

I always drive my customer away.

Who am I?

Asked by Neha on 29 Oct 2024


Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

Asked by Neha on 30 May 2023

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Rubik’s Cube

The inventor of the Rubik’s Cube didn’t realize he’d built a puzzle until he scrambled it the first time and tried to restore it.