Son of a Chemist

I am the son of a chemist and a mathematician. People call me iron 59. What is my name?

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How High

How high would you have to count before you would use the letter A in the English language spelling of a whole number?

An Egg to a Friend

Mike has some chickens that have been laying him plenty of eggs. He wants to give away his eggs to several of his friends, but he wants to give them all the same number of eggs. He figures out that he needs to give 7 of his friends eggs for them to get the same amount, otherwise there is 1 extra egg left.
What is the least number of eggs he needs for this to be true?

From Apple-York to Strawberry-Ville

You have been given the task of transporting 3,000 apples 1,000 miles from Apple-York to Strawberry-Ville. Your truck can carry 1,000 apples at a time. Every time you travel a mile towards Strawberry-Ville you must pay a tax of 1 apple but you pay nothing when going in the other direction (towards Apple-York).
What is highest number of apples you can get to Strawberry-Ville?

Plus vs. Times

Given two 2s, "plus" can be changed to "times" without changing the results: 2 + 2= 2 x 2.
The solution with three numbers is easy too: 1 + 2 + 3= 1 x 2 x 3.
Now find the answer for 4 numbers and for 5 numbers.

How Many Pluses

How many pluses should we put between the digits of 987,654,321 to get a total of 99, and where?

The Short Cut and the Train

Walking home one day, you take a short cut along the train tracks. The tracks cross a narrow bridge over a deep gorge. At the point you are 3/8 of the way across the bridge, you hear the train whistle somewhere behind you. You charge across the bridge, and jump off the track as the train is about to run you down. As it happens, if you had gone the other way, you would have reached safety just before being run over as well. If you can run ten miles per hour, how fast is the train moving?

What's the Next Number?

Nonstop Trains

A nonstop train leaves Moscow for Leningrad at 60 mph. Another nonstop train leaves Leningrad for Moscow at 40 mph. How far apart are the trains 1 hour before they pass each other?

The Wedding Shower Present

Janie's friends were chipping in to buy her a wedding shower present. At first, 10 friends chipped in, but 2 of them dropped out. Each of the 8 had to chip in another dollar to bring the amount back up. How much money did they plan to collect?

Product Equals Sum

Make the Equation True

Adding Eights

Subtracting from 25

The Magic Number Pattern

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern here?

The Business of Horses

A businessman buys a horse for $10 and sells it for $20. He then buys the same horse for $30 and sells it for $40.
How much has the businessman earned in these 2 deals?

The Pawn Shop

Jack had only $2, but he needed $3 for his cab fare home. He went to a pawn shop and pawned his $2 for $1.50. Jack then bumped into Don and told him that he would sell him his $2 pawn ticket for $1.50. Dan agreed. Since Jack started out with $2, and he ended up with $3, who is out the extra dollar and why?

The Bubble Boy

If a boy blows 18 bubbles, then pops 6 eats 7 and then he pops 5 and blows 1.
How many are left?

365 Apples

Crossing the Bridge

Four people need to cross a bridge in 17 minutes in the middle of the night. The bridge can only hold two or less people at any time and they only have one flashlight so they must travel together (or alone). The flashlight can only travel with a person so every time it crosses the bridge it must be carried back. Tom can cross in 1 minute, John can cross in 2 minutes, Sally can cross in 5 minutes, and Connor can cross in 10 minutes. If two people cross together they go as fast as the slower person.How can they cross the bridge in 17 minutes or less?

The One-Sided Toaster

Susan uses a toaster that has 2 slots. The toaster toasts one side of each piece of bread at a time, and it takes exactly 1 minute to do so.
If Susan wants to make three pieces of toast, what is the LEAST amount of time she needs to toast them on both sides?

The Hourglasses

If you have an 11 minute and 13 minute hourglass, how can you accurately time 15 minutes?

From 98 to 720

The Two Kids

Mr. Thompson has 2 children. One of them is a boy. What are the odds the second kid is also a boy?

The Angle of the Clock

What's the angle between minute hand and hour hand at a quarter past three?

Taking Down 1000

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Reversed Age

The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be?
* There are THREE possible solutions

Animals on the Bed

You enter a room and notice a bed. There are 3 dogs, 2 cats, 1 goat, 4 crows, and a goose on the bed. In addition, 3 sparrows are flying around the bed.
How many LEGS are there on the floor?

Giving Away Vegetable Oil

You are distributing vegetable oil. There are 21 bottles in total out of which 7 are full, 7 half empty and 7 empty. The oils has to be distributed among three people.
How will you distribute so that each person gets equal number of bottles and the same quantity of oil?

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