Maths number puzzles often feature in a number of competitive exams. These are based on various concepts of algebra, arithmetic, time & distance, etc. Here is a compilation of a variety of puzzles grouped into: easy, medium and difficult maths puzzles. Each article contains a set of 10 mathematical puzzles with answers and explanations. In this article, you will come across difficult puzzles based on the basic concepts of mathematics.

Example: To form 1122, you would need 2 – 1s & 2 – 2s but you would not count the numbers again that you had already counted from making 1122 to form another numbers.

At the auction he makes a successful bid of Rs.8456 for a table. He hands the auctioneer envelopes number(s) 4, 9, and 14. After opening the envelopes the auctioneer finds exactly the right amount. How many Rs.2 notes did the auctioneer find in the envelopes?

Dismounting from his camel, he asked if he might help, for he knew just what to do. The brothers gratefully accepted his offer. Adding his own camel to Shantnu's 19, he divided the 20 as per the will. The oldest son received 10, the next 5, the third 4 . One camel remained: this was his, which he mounted and rode away.

Scratching their heads in amazement, they started calculating. The oldest thought: Are not 10 greater than the half of 19? Someone must have received less than his proper share! But each brother discovered that he had received more than his due. How is it possible?

You can cut an existing piece horizontally or vertically.

You cannot cut two or more pieces at once (so no cutting through stacks).

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Mathematical Puzzles: Practice Exercises