Tag: math & puzzles

John had dinner the other night with his only sibling's husband's mother-in-law's only daughter-in-law. With whom did he dine?

Joe loves to create confusion. One Tuesday he sent an e-mail memo to his secretary that said, "I'll be back in the office three days before one week after the day after tomorrow." When would he be back?

What number should replace the question mark? 13 44 88 176 847 ?

What letter is immediately to the left of the letter three to the right of the letter immediately to the left of the letter three to the right of B? A B C D E F G H

There is a pole in a lake. One-half of the pole is in the ground, another one-third of it is covered by water, and 11 ft is out of the water. What is the total length of the pole in ft?

Divide $551 (in whole $ increments) into a number of bags so that I can ask for any amount between $1 and $551, and you can give me the proper amount by giving me a certain number of these bags without opening them. What is the minimum number of bags you will require?

A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 50 times the difference between the two numbers equals the difference between the squares of the two numbers." The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?

Can you find a quick and elegant way to add the numbers from 1 to 26 ? In other words, what is the sum you obtain in the following case: 1 + 2 + 3 + ....... + 26 =

Last vacation, my cousin came over to stay at my home. We made the most of her stay at my place... and I even earned a few chocolates. Everyday, we would play a game of chess. Whoever lost the game owed a chocolate to the other. After the last game we played (that was the day she was to leave), we counted the number of games each of us had won and lost. Wow! I had won more than her. So, she handed me 11 chocolates... though she herself was the winner in 10 games. How many days did my cousin spend at my place?

who is father of maths