if 2 = 6, 3 =12, 4 = 20, 5 = 30, 6 = 42 then 9 = ?

Question

this was an IQ genius test

Answer 1

9 = 9

Answer 2

The answer is 56. I worked it out if 2=6   3=12    3x2 = 6 ....4x3=12....5x4=20...6x5=30....9x6=54

Answer 3

You have to think Algebra for some of those who say it's not a mathematical problem!

9=90

Think of it the way...

9y=90

Y=90

Adding 1 each time! Finishing the missing numbers instead of jumping from 6 to 9. It makes sense... 9y=90!

Answer 4

9=90

9y=90

Y=10

You must think alegebra for those of you who say it's not an answer!

Answer 5

Each answer after the first has 2 added to it. Looking at the pattern of answers, the final answer is 78.
 

Answer 6

x * (x+1) = y

9 * (9+1) = 90

Answer 7

I got 90 2•3=6 3•4=12 4•5=20 5•6=30 6•7=42 7•8=56 8•9=72 9•10=90

Answer 8

I'm not going through the math because several already have.  The correct answer is 90 because the numbers 2, 3, 4, 5, and 6 in the problem constitutes numbers in a sequence to infinity with the answer being where number 9 is within the sequence.  For the answer to be anything else, then 2, 3, 4, 5, and 6 would have to all be random numbers, which they are not and there is nothing in the problem to indicate the numbers are random.

Answer 9

it is easy because 9 times 10 = 90 so answer = 90

Answer 10

As written the answer is 56,

Answer 11

90. Because, 2 x 3 = 6 3 x 4 = 12 4 x 5= 20 5 x 6= 30 6 x 7= 42 9 x 10= 90

Answer 12

100. each number in the right hand column increases by 2 as it is added.
6+6=12
12+8=20
20+10=30
30+12=42
42+14=56 (not shown)
56+16=82 (not shown)
82+18=100

Answer 13

i got 90... What is the correct answer?

Answer 14

It's just a next in series question. It is written incorrectly.   You don't have to be a genius to answer it (correctly), but you do have to leave out assumptions.  I'm amazed at how hard so many people worked to get the answer wrong.  A perfect example of why the world is struggling today.  Taking a simple task, making it harder than it needs to be and then complicating yourself into the wrong answer.  -  Yes, I know I didn't provide it, because if I do, many will tell me how stupid I am based on their incorrect answer,  which in turn just supports my comment.

Answer 15

2=6,3=12,4=20,5=30,6=42,7=56,8=72 et 9=90

Answer 16

What makes me want to go 9x8 instead of 9x10? I must be dyslexic.

Answer 17

90 is the answer that I received.

Answer 18

2(*3)=6. 3*4=12 4*5=20 5*6=30 6*7=42 then 9*10 =90. The answer is 90