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### Polaris Maths Aptitude Interview Question

Polaris Maths Aptitude Interview Question - 23 March

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

* This question was asked in polaris

1. I believe it's 240:

12 + 8 + 0*10 = 20
20 + 10 + 1*10 = 40
40 + 12 + 2*10 = 72
72 + 14 + 3*10 = 116
116 + 16 + 4*10 = 172
172 + 18 + 5*10 = 240

2. 12 , 20 , 40 , 72 , 116 , 172
Find Difference - 8 20 32 44 56
Again Find Diff. - 12 12 12 12.....
So, Add 12 to 56 = 68
Then , Add 68 to 172 = 240

4. i hope it is 240
solution: gap between the given series is +8,+20,+32,+44,+56,+68 and again the b/w these series is +12 finally answer is 240

5. Logic:
240

6. its 240 theres difference of 8,20,32,44,56 wic r in AP wit CD 12 so next is 68 ie wen it added to 172 it is 240.........

7. Abhinav SrivastavaJune 14, 2013 at 6:14 PM

The differece between the consecutive numbers is increasing everytime by 12.

8. (3+0)*4=12
(3+2)*4=20
(5+5)*4=40
(10+8)*4=72
(18+11)*4=116
(29+14)*4=172
(43+17)*4=240

9. Its 240 ,

12 + (4*2)=20

20 + (4*5)=40

40 + (4*8)=72

72 + (4*11)=116

116 + (4*14)=172

172 + (4*17)=240

10. f(x) = 6x^2-10x+16, so f(7) = 240