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POW: 12-09-2019

Riddle:

One is to three as three is to five and five is to four and four is the magic number.


What is the pattern?

Answer:

One has three letters in the word three has five letters in it five has four letters and four has four letters in it (if you try more numbers they will always come back to the number four: so four is the magic number)

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POW: 12-02-2019

Riddle:

What number is that, which, added separately to 100 and 164, shall make them perfect squares?

Answer:

125.

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Riddle:

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Answer:

33. The pattern:  Double the previous number and subtract 1.

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POW: 11-18-2019

Riddle:

An item is made from lead blanks in a lathe shop. Each blank suffices for 1 item. Lead shavings accumulated for making 6 items can be melted and made into a blank. How many items can be made from 36 blanks?

Answer:

From 36 blanks there are 36 items made. The lead shavings are enough to make 6 blanks. Which make 6 more items. But don't stop here. The new shavings are good for 1 more item. Total: 43.

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POW: 11-11-2019

Riddle:

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Answer:

The difference in age is 23 years, so I must be 23 if my father is twice as old as me.

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POW: 11-04-2019

Riddle:

Take two numbers, such that the square of the first, plus the square of the second, shall equal 8; while the first, plus the product of the first and second, shall equal 6.  What are the two numbers?

Answer:

2 and 2.

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POW: 10-21-2019

Riddle:

81 x 9 = 801. What must you do to make the this equation true?

Answer:

Turn it upside down.  108 = 6 x 18.

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POW: 10-07-2019

Riddle:

A sphere has three, a circle has two, and a point has zero. What is it?

Answer:

Dimensions.

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POW: 09-30-2019

Riddle:

A man bumps into his mathematician friend on the street that he hasn't seen in 5 years. The man asks the mathematician how old his children are. The mathematician, who always replies in riddles said, "I now have three children. The sum of their ages is equal to the number of windows on the building in front of you and the product of their ages equals 36." The friend then says "I need one more piece of information." The mathematician then replies "My youngest child has blue eyes." What are the ages of the mathematicians three children?

Answer:

They are 6, 6, and 1.

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POW: 09-23-2019

Riddle:

How can you make the following equation true by drawing only one straight line: 5+5+5=550? Can you figure it out?

Answer:

Draw a line on the first plus sign that turns it into a 4! The equation then becomes true: 545+5=550. You could also change the equal symbol to a crossed out equal symbol which means "not equal to".

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To see more past Problem of the Week's refer to the Riddles Newsletter annals.