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

this was an IQ genius test
asked Apr 24, 2013 in Word Problem Answers by anonymous

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47 Answers

The answer is 56
answered Apr 24, 2013 by Jliebno107 (140 points)
I can't believe the variety of answers to this question. Including 81, which I've yet to see someone actually offer the math for.

People say that it depends on what "valid" variable you us, or that you have to assume this or that in the "missing" pattern, but you really don't.

The simple formula for this is x^2+x=y or if you want, x*x+x=y.

You don't even have to calculate the "missing" numbers.

9*9+9 = 81+9 = 90. So y=90.

The answer is:90
answered Apr 25, 2013 by anonymous
I got 56!

6 x 1 = 6 +6 = 12 (the next answer)

12 x 1 = 12 + 8 = 20 (the next answer)

20 x 1 = 20 + 10 = 30 (the next answer)

30 x 1 = 30 + 12 = 42 (the next answer)

42 x 1 = 42 + 14 = 56!!!!
answered Apr 26, 2013 by anonymous
If the multiplier is the unknown variable the pattern revealed below is possible by adding 1 to the multiplier. 9 would be 90

2x3 = 6

3x4= 12

4x5 = 20

5x6 = 30

6x7 = 42

7x8 = 56

8x9 = 72

9x10 = 90
answered Apr 26, 2013 by anonymous
The answer is 9 = 60
answered Apr 26, 2013 by anonymous
2 = 6  2x3 =6

3 = 12 3x4 =12

4 = 20 4x5 = 20

5 = 30 5x6 = 30

6 = 42 6x7 = 42

7 = 49 7x8 = 56

8 = 64 8x9=72

9 = 90 9x10 = 90
answered Apr 26, 2013 by anonymous
60

pattern is 2x current number added to the previous answer

so

last number is 6 = 42 so

9 = (9x2) or 18 + 42

9 = 60
answered Apr 26, 2013 by anonymous

 

#include <stdio.h>
 
int main (int argc, const char * argv[]) {
   
    int n=0; int x=0;
    
    while( n++ < 20 )
    
    {
            
    x = n * ( n + 1 ); 
    printf("%i : %i \n", n, x);
  
             
    }
   return 0;
answered Apr 27, 2013 by anonymous
9 = 20,10 = 33,11 = 48,12 = 65,13 = 84
answered Apr 27, 2013 by anonymous
7=56 8=72 9=90
answered Apr 27, 2013 by anonymous

 

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

 

6+3*2=12

12+4*2=20

20+5*2=30

30+6*2=42  then 

42+9*2=60

answered Apr 29, 2013 by anonymous
2=6

3=12

4=20

5=30

6=42

7=49

8=58

9=67

Antwoord = 67
answered Apr 29, 2013 by anonymous
90

 

2x3=6 3x4=12 4x5=20 5x6=30 6x7=42 7x8=56 8x9=72 9x10=90
answered Jun 5, 2013 by anonymous
If 2 = 6,  ( 2 x 3 added to 6 = 12) hence  3 = 12: And 2 x 4 added to 12 = 20, hence 4 = 20,  And 2 x 5 added to 40 = 42, then 2 x 9 added to 42 = 60,

 

Therefore 9 = 60
answered Jun 5, 2013 by anonymous

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

2=6(4)

3=12(6)

4=20(8)

5=30(10)

6=42(12)

7=56(14)

8=72(16)

9=90(18)

10=110(20)

 

 

9=90

 

 

 

 

answered Jun 7, 2013 by anonymous

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

2=6(4)

3=12(6)

4=20(8)

5=30(10)

6=42(12)

7=56(14)

8=72(16)

9=90(18)

 

answered Jun 7, 2013 by anonymous
So I got "60" w a pattern of escalation by 2 each time. But my i see reasoning for "56" and "90".  So what is THE answer?
answered Jun 8, 2013 by anonymous
2*3 3*4 4*5 . . . .9*10=90
answered Jun 8, 2013 by anonymous
9=then 9
answered Jul 2, 2013 by anonymous
it can be solved with 2 methods. 1st method. 2x3=6 3x4=12 4x5=20 5x6=30 6x7=42 then 9x10=90 2nd method 2x2=4. 4+2=6 3x3=9. 9+3=12 4x4=16. 16+4=20 5x5=25. 25+5=30 6x6=36. 36+6=42 then 9x9=81. 81+9=90. So 90 is the Correct Answer.
answered Aug 1, 2013 by Cashew Nuts
the answer is 90
answered Oct 3, 2013 by haikal
if 2 = 6, 3 =12, 4 = 20, 5 = 30, 6 = 42 then 9 = ? 2+1=3,2*3=6 3+1=4,3*4=12 and so on..... so 9+1=10,9*10=90;
answered Oct 5, 2013 by monika ghodake
Asnwer is 70.
answered Nov 8, 2013 by anonymous

6/2 =3

12/3 =4

20/4 =5

30/5 =6

42/6 =7

The answer keeps increasing by1.

So 

x/9 =8

x =9*8

x =72

answered Nov 11, 2013 by anonymous

Para ser 90, a matriz precisava deixar claro que existe o 7 e 8.

Isto não ocorre. Acredito que o resultado mais provável seja 58, pois o resultado é sempre a soma dos números da esquerda , diagonal acima e superior + 1:

12 =( 6 + 3 + 2) + 1

20 =(12 + 4 + 3) + 1

30 = (20 + 5 + 4) + 1

42 = (30 + 6 + 5) + 1

?? = (42 + 6 + 9) + 1 = 58

answered Nov 12, 2013 by Marcus Alexandre Silva
6-4(3-5)2+30/5
answered Nov 14, 2013 by Tyrone
if 2 = 6, 3 =12, 4 = 20, 5 = 30, 6 = 42 then 9 = ?

I think is: Number X Next position Number from the given variables.

2 = 6 , so 2x3=6

3 = 12, 3x4=12

4 = 20, 4x5 = 20

5 = 30, 5x6 = 30

6 = 42, 6x7 = 42

9  = 9x10 = 90
answered Dec 5, 2013 by Moises
if 2 = 6, 3 =12, 4 = 20, 5 = 30, 6 = 42 then 9 = ? my answer?
answered Dec 8, 2013 by mustansar nazar
9=90
answered Dec 8, 2013 by anonymous
8*9=72
answered Feb 6 by zahra
9 x 8=72
answered Mar 7 by alice
9 = 56
answered Mar 27 by Alvaro
This is easy..The answer is simply... 9

once you guys realize that this isn't really a math problem & that the whole equation is incorrect..Then you'll understand why...the answer is..... 9
answered Mar 28 by Big Fred
2 = 6

3 = 12 (+ 6)

4 = 20 (+ 8)

5 = 30 (+ 10)

6 = 42 (+12)

7 = 66 (+14)

8 = 82 (+ 16)

9 = 100 (+ 18)

Each successive number is arrived at by adding a progressively larger number (larger by 2) to the result.
answered Mar 30 by Ben Estes
90 answers
answered Apr 21 by manoj rawal
9. Or, if you're willing to accept the abuse of the equality sign in the proposition, continue the pattern "x=x*(x+1)" to get 90.
answered May 23 by anonymous

7 and 8 are not there ... use the numbers shown ..... add 2 numbers plus the previous total to get the next total 3+3+6=12 / 4+4+12=20 / 5+5+20=30 / 6+6+30=42 / 9+9+42=60

 

answered Jun 1 by anonymous

2x3=6

3x4=12

4x5=20

.............

9x10=90!!!

answered Jun 1 by 6482840 Level 9 User (41,960 points)
The answer is 9
answered Jun 2 by Dee
the answer is simple, the answer is there is no answer, because 2 does not equal 6 and 3 does not equal 12 and so on, true there is a patern but that's just there to trick you, but what if there wasn't a patern? most people would have got the answer because they gave up on what they learned at school or what they were taught
answered Jun 2 by anonymous
My answer is 72
answered Jun 4 by Cherry Taton
posible answer is 72
answered Jun 5 by JJ
30. Because 2=6=42.
answered Jun 29 by Johannes
9+(9*9)=90
answered Jul 28 by anonymous
2=2x3=6

3=3x4=12

4=4x5=20

...

9X10=90
answered Sep 11 by hiray
answer is 56
answered Oct 21 by anonymous
Este problema no tiene solucion, o bien, no tiene una solucion unica.

Si se pretende seguir un razonamiento matematico a este problema, ya de partida las condiciones iniciales no lo son, por ejemplo, 2 no es igual a 6.

Saludos
answered Oct 22 by Francisco

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