Unlisted Phone Number

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?




Similar Riddles

A father's child, a mother's child, yet no one's son.

Who am I?

Asked by Neha on 21 Mar 2022


Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Asked by Neha on 11 Oct 2024

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

Asked by Neha on 08 Feb 2026


Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Asked by Neha on 24 Jun 2025

Replace the question mark with the correct number below.

Tree Problem

Asked by Neha on 19 Mar 2024

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Asked by Neha on 09 Feb 2025


The cream is heavier than Milk. True or False?

Asked by Neha on 18 Sep 2024

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Asked by Neha on 06 Apr 2022

Count the squares in the matchstick puzzle below?

Count the Squares

Asked by Neha on 17 Sep 2023


What has a ring but no finger?

Asked by Neha on 13 Apr 2024

Hot Articles

Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.