Series: Subject: Topic:
Question: 48 of 64

# series: 2,7,24,77,...

This question is related to TCS Interview
zanhsieh

Answered On : Apr 8th, 2006

12,17,120,153

Sreekanth P Krishnana

Answered On : Apr 17th, 2006

the ans is 238.

3*77+7

vaishali

Answered On : 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

hema

Answered On : May 2nd, 2006

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

muthu

Answered On : Jun 22nd, 2006

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

KARUNAKAR

Answered On : Jun 6th, 2007

3*2=6+1=7;
Similarly 3*77=231+7=238

amit kumar verma

Answered On : 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

1 User has rated as useful.

cnathan

Answered On : Jun 2nd, 2008

the ans will be 240 or 238

vimalanth

Answered On : Jun 4th, 2008

Its simple.. Its 238.
steps:
(2*3)+1=7
(7*3)+3=24
(24*3)+5=77
(77*3)+7=238

bangers

Answered On : 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

prititripathi

Answered On : 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

alok

Answered On : 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,.

Maheshwari

Answered On : Sep 16th, 2011

46,147

jivko1111

Answered On : Sep 17th, 2011

238

times 3 plus 1
times 3 plus 3
times 3 plus 5 .. pattern shows that next number is
times 3 plus 7 => 3.77+7= 238

vinayak gupta

Answered On : Sep 18th, 2011

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

Jinal

Answered On : Sep 19th, 2011

238

vaibhav

Answered On : 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

Shalini gupta

Answered On : 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.

vandhana

Answered On : Oct 7th, 2011

238

manikandan

Answered On : Oct 8th, 2011

2*3+1=7

7*3+3=24

24*3+5=77

77*3+7=238

Therefore ans is 238

sudheer

Answered On : Oct 8th, 2011

190

Ashwini kanmande

Answered On : Oct 9th, 2011

238

RAKESH SHARMA

Answered On : 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

lakshmiram

Answered On : Feb 5th, 2012

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