Quick Maths Riddle

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?




Similar Riddles

What will you call your mother's brother's brother-in-law?

Asked by Neha on 15 Jul 2024


A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

Asked by Neha on 08 May 2021

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Asked by Neha on 20 Aug 2025


I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Easy Gallon Riddle

Asked by Neha on 21 May 2021

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Asked by Neha on 13 Sep 2024

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

Asked by Neha on 13 Sep 2025


Solve the rebus riddle in the picture below.

Millionaire Riddle

Asked by Neha on 14 Feb 2026

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Mathematical Signs Magic

Asked by Neha on 08 Mar 2021

Which famous Hollywood movie name is hidden in the below rebus?

Hollywood Movie Riddle

Asked by Neha on 20 Apr 2026


There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Asked by Neha on 28 Sep 2021

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.