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

Can you fill the blank with the correct number?

6 30 870 756030 _____

Asked by Neha on 20 Feb 2023


If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Asked by Neha on 25 Sep 2023

What is the difference between a jeweller and a jailer?

Asked by Neha on 11 Jul 2025


Can you make four (4) nines (9) equal 100?

Asked by Neha on 16 Jul 2023

With the help clues provided in the image, can you find the 5 digit key?

Find the Key

Asked by Neha on 14 May 2021

What do you get if you add 2 to 100 four times?

Tricky Maths

Asked by Neha on 24 Jun 2024


I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Asked by Neha on 24 Oct 2023

what's the probability of getting a king or a queen from a pack of 52 cards?

Asked by Neha on 27 Sep 2024

You see me once in June, twice in November, and not at all in May. What am I?

Asked by Neha on 31 Jul 2025


There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

Asked by Neha on 25 Feb 2026

Hot Articles

Amazing Facts

Artificial Intelligence

Artificial Intelligence has crushed all human records in the puzzle game “2048,” achieving a high score of 839,732 and beating the game in only 973 moves without using any undo.