#36 - Maths Trick Riddle

Difficulty Popularity

I know a number which when multiplied by multiple of 9 i.e 9 18 27 36 45 ... the output consist of number containing only one digit.

Can you identify the number ?
category : MATHS

#37 - Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

#38 - Tricky Maths Riddle

Difficulty Popularity

Hockey Stick and ball cost $50. If the Stick cost $49 more than the ball.

what is the cost of each ?

#39 - Hard Maths Number Riddle

Difficulty Popularity

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits
category : LOGIC | MATHS

#40 - Tough Maths Riddle

Difficulty Popularity

Take 9 from 6, 10 from 9, 50 from 40 and leave 6.

How Come ??

#41 - Really Hard Algebra Puzzle

Difficulty Popularity

2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=72,
7+8=??
Solve it?
category : MATHS

#42 - Live Or Die Probability Puzzle

Difficulty Popularity

Hussey has been caught stealing goats, and is brought into court for justice.

The judge is his ex-wife Amy Hussey, who wants to show him some sympathy, but the law clearly calls for two shots to be taken at Hussey from close range.

To make things a little better for Hussey, Amy Hussey tells him she will place two bullets into a six-chambered revolver in successive order.

She will spin the chamber, close it, and take one shot.

If Hussey is still alive, she will then either take another shot, or spin the chamber again before shooting.

Hussey is a bit incredulous that his own ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower.

He steels himself as Amy Hussey loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Amy Hussey asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Hussey choose?

#43 - 8/x = 160 Value X Maths Brain Teaser

Difficulty Popularity

If 8/x = 160, what is the value of x?

a) 20
b) 1280
c) .05
d) 1/2

category : MATHS | EQUATION

#44 - Two Dice Probability Brain Teaser

Difficulty Popularity

What is the probability of rolling a sum of 7 with two fair six-sided dice?

#45 - Misfit Maths Shape Riddle

Difficulty Popularity

Which pattern is the odd one out?

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