Math Riddles

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Math Riddles - we offer best online math riddles and brain teasers for kids and adults. 100+ math riddles to think out of the box.

Can you solve below mathematical equation?

2^1234 - 2^1233

Asked by Vinay on 26 Jan 2024


Find the combined weight of the Cat, Dog and Rabbit in the given picture.

 Weight of Animals

Asked by Sachin on 17 Jan 2024

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

Asked by john on 05 Jan 2024


What is next number in the pattern below:

131 517 192 123 ?

Asked by Mehmat on 31 Dec 2023

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Asked by Sachin on 16 Dec 2023

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

Asked by Paul on 06 Dec 2023


An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Asked by Naresh on 26 Nov 2023

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Asked by Vinod on 21 Nov 2023

Can you find out the remainder when 3^300 is divided by 5?

Asked by Sachin on 31 Oct 2023


A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Asked by Sachin on 26 Oct 2023

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There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.