Series: 2,7,24,77,...

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Sreekanth P Krishnana

  • Apr 17th, 2006
 

the ans is 238.

3*77+7

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vaishali

  • May 2nd, 2006
 

hi;

Ans is:

2*3+1=7

7*3+3=24

24*3+5=77

77*3+7=238

Therefore ans is 238

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hema

  • May 2nd, 2006
 

2,7,24,77,...2*12=247*11=7724*10=240ANS= 240

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muthu

  • Jun 22nd, 2006
 

2*12=24 7*11=77 24*12=288 so according to my view i feel 288 is the answer

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KARUNAKAR

  • Jun 6th, 2007
 

3*2=6+1=7;
Similarly  3*77=231+7=238

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amit kumar verma

  • Jun 18th, 2007
 

the ans of series 2,7,24,77,....    should be 238 

   reason:
                      multiplied by 3 & adding 1,3,5,7,........
             i.e
           2 x 3= 6 + 1 = 7
           7 x 3 = 21 + 3 = 24
           24 x 3 = 72 + 5 = 77
           77 x 3 = 231 + 7 = 238

bangers

  • Jan 1st, 2011
 

Ans is 238 but the reason is

the seq is 3^X-X
i.e 3 (raisedto) 1 -1=2
     3 (raisedto) 2 -2=7
    3 (raisedto) 3 -3=24
    3 (raisedto) 4 -4=77
 proceeding we get 238





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prititripathi

  • Mar 5th, 2011
 

series work like dat


   2*1+0=2
   2*3+1=7
   7*3+3=24
  24*3+5=77
 77*3+7=238

every new digit is d 3 multiple of previous find digit +an odd no. sum in it



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alok

  • Sep 16th, 2011
 

split into 2 series..
2,24..
7,77...

now ,if we look...2 x 12^0=2, 2 x 12^1 = 24 , 2 x 12^2 = 288
and for the second series 7 x 11^0= 11, 7 x 11^1=77.....so on,.
so the answer is 288.

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Maheshwari

  • Sep 16th, 2011
 

46,147

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vinayak gupta

  • Sep 18th, 2011
 

2, 7, 24, 77, 236, 708, .....

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Jinal

  • Sep 19th, 2011
 

238

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vaibhav

  • Sep 20th, 2011
 

178

2,7,24,77

7-2=5
24-7=17=12+5
77-24=53=24+17

178-77=101=48+53

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Shalini gupta

  • Oct 7th, 2011
 

2,7,24,77,128 and so on
Description:-
2*3+1=7
7*3+3=24
24*3+5=77
77*3+7=228 and so on and here 1,3,5,7 are in G.p.

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vandhana

  • Oct 7th, 2011
 

238

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manikandan

  • Oct 8th, 2011
 

2*3+1=7

7*3+3=24

24*3+5=77

77*3+7=238

Therefore ans is 238

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sudheer

  • Oct 8th, 2011
 

190

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Ashwini kanmande

  • Oct 9th, 2011
 

238

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RAKESH SHARMA

  • Jan 29th, 2012
 

step 1--> 3*1-1=2
step 2--> 3*2-2=7
step 3--> 3*3-3=24
step 4--> 3*4-4=77
step 5--> 3*5-5=238

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lakshmiram

  • Feb 5th, 2012
 

2*3+1=7,7*3+3=24,24*3+5=77,77*3+7=238

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AmarJeet

  • Apr 7th, 2016
 

238

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Poonam Sinare

  • May 14th, 2016
 

238

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mohit singla

  • Aug 8th, 2016
 

238

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arif tamboli

  • Aug 9th, 2016
 

238

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sruthi.M

  • Sep 23rd, 2016
 

2*3=6+1=7
7*3=21+3=24
24*3=73+5=77
77*3=231+9=240

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krishna sai

  • Nov 12th, 2016
 

77*3+7=238

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nikunj

  • Jan 12th, 2017
 

238

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Rahul Prajapat

  • Aug 28th, 2017
 

2*3+1=7
7*3+3=24
24*3+5=77
77*3+7=238

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