**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

**For Solution :**Click Here

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Find the next number in the series

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

* This question was asked in polaris

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I believe it's 240:

ReplyDelete12 + 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

12 , 20 , 40 , 72 , 116 , 172

ReplyDeleteFind 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

gr8 man...

Deletenice .

Delete240 is the Answer:)

ReplyDeletei hope it is 240

ReplyDeletesolution: 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

240,,,,

ReplyDeleteLogic:

ReplyDelete240

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.........

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

ReplyDelete(3+0)*4=12

ReplyDelete(3+2)*4=20

(5+5)*4=40

(10+8)*4=72

(18+11)*4=116

(29+14)*4=172

(43+17)*4=240

Its 240 ,

ReplyDelete12 + (4*2)=20

20 + (4*5)=40

40 + (4*8)=72

72 + (4*11)=116

116 + (4*14)=172

172 + (4*17)=240

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

ReplyDelete240..

ReplyDeleteGood collection...

ReplyDeleteAPTITUDE INTERVIEW QUESTIONS AND ANSWERS