If
1 = 5 ,
2 = 25 ,
3 = 325 ,
4 = 4325

Then 5 = ?

1

### #2 - Simple Maths Picture Problem

Repalce the quetsion mark with the number in this simple maths problem ?

18

### #3 - Tricky Algebra Sum Riddle

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 1000 one more time.
Now add 1000 one more time.

What is the total?

4100
some people might guess 5000

### #4 - Solve The Riddle

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

110
73037

### #5 - Most Famous Maths Puzzle

I can prove why 1 = 2

* Lets say y = x
* Multiply through by x xy = x2
* Subtract y2 from each side xy - y2 = x2 - y2
* Factor each side y(x-y) = (x+y)(x-y)
* Divide both sides by (x-y) y = x+y
* Divide both sides by y y/y = x/y + y/y
* And so... 1 = x/y + 1
* Since x=y, x/y = 1 1 = 1 + 1
* And so... 1 = 2

How is this possible ?

Step 5 is invalid, because we are dividing by (x-y), and since x=y, we are thus dividing by 0. This is an invalid mathematical operation (division by 0), and so by not following basic mathematical rules

### #6 - Math Riddle

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

1,2, & 3

1 x 2 x 3 = 6 and 1 + 2 + 3 = 6

### #7 - Fun Maths Puzzle

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?

100. Looks hard? Don't worry, just work it backwards and you'll find it very easy.

### #8 - Analytical Maths Riddle

Can you find four consecutive prime numbers that add up to 220?

47 + 53 + 59 + 61 = 220

### #9 - Friends Maths Puzzle

Ross five friends Rachel,Monica Phoebe,Joey and Chandler lives in the same road.

Rachel lives in house:A , Monica lives in house:B , Phoebe lives in house:C , Joey lives in house:D , Chandler lives in house:E

Mathematically
B*C*D = 1260
B + C + D = 2E
2A = E

The road numbers run from 2 to 222.

Can you tell the house number of each of Ross's friends ?

Rachel lives in House no.36
Monica lives in House no.4
Phoebe lives in House no.9
Joey lives in House no.35
Chandler lives in House no.24

### #10 - Tricky Equation Puzzle

Can you arrange four 9's and use of atmost 2 math symbols , make the total be 100?

99 / .99