Mathematical Games 4

Shishu Sansaar

Mathematical Games 4

Games 1 | Games 2 | Games 3

Game No 16:
Finding Somebody's Age

1. First, pick a number more than 1 but less than 10.

2. Multiply the number by 2.

3. Add 5.

4. Multiply it by 50 - I'll wait while you get a calculator!!

5. If you have already had your birthday this year, add 1753.
If you haven't, then add 1752.

6. Now subtract the four digit number of the year of your birth.

You should be left with a three digit number.

The first digit of this was your original number
The next two numbers are your age (oh yes they are!!)

Impressive isn't it?

Game No 17:
Joining Nine Dots

Below are given nine dots (numbers for ease). Can you join them without touching one dot twice? Give it a try.

1 2 3

4 5 6

7 8 9

See the answer on Answer Page.

Game No 18:
We Are Even

A girl asked a dollar from her friend. Her friend was about to take out the dollar bill from her purse that the girl said - "you keep 50 cents and give me only 50 cents."

The friend asked "Why". The girl said - "Then you will owe me the 50 cents, and I will also you 50 cents, and we will be even."

Is it OK? Reasoning is logical, but somehow it is not reasonable.

Game No 19
Toothpick Triangles

You can make a triangle that has three equal sides with three toothpicks. Similarly you can make two triangles of equal sides with six toothpicks. But at the same time you can make two triangles of equal sides with five toothpicks also.

Now the game is to make four triangles of equal sides with only six toothpicks. Can you do it? If not see the answer on Answer Page.

Game No 20:
Some More Toothpick Problems

1. Use NINE toothpicks to make TEN.
2. Use SIX toothpicks to make ZERO.
3. Use toothpicks to show that SIX and FIVE make NINE.
4. Use toothpicks to show that half of ELEVEN is SIX.

See their answers on Answer Page.

Games 1 | Games 2 | Games 3

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Created by Sushma Gupta on 05/27/2001
shishusansar@yahoo.com
Modified on 07/22/08