Mathematical Fraction

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()




Similar Riddles

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

Asked by Neha on 04 Jun 2025


Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

Asked by Neha on 14 May 2021

How many times in a given day, minutes and hour clock comes in a straight line ?

Asked by Neha on 03 Mar 2023


P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Who is Who

Asked by Neha on 16 Mar 2021

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Fence the Fencing

Asked by Neha on 09 Mar 2021

Which letter of the alphabet has the most water?

Asked by Neha on 03 Aug 2025


The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Asked by Neha on 01 Aug 2023

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Asked by Neha on 16 May 2022

10+10 and 11+11 can give you the same answer.

Explain how?

Asked by Neha on 07 Aug 2021


Which Burger Is Different in below image?

Odd Man out

Asked by Neha on 09 Feb 2023

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.