Find the next term in the given series -

47, 94, 71, 142, 119, 238, . ?

a.331

b.360

c.320

d.340

• Ans : 215, 430
  
  (47, 94) (71, 142) (119, 238) (x, Y)
  47 * 2 = 94
  94 - 23 = 71
  71 * 2 =142
  142 - 23 = 119
  119 * 2 = 238
  238 - 23 = 215
  215 * 2 = 430
  
  So d next 2 terms are 215 , 430
  
  
• 10 years agoHelpfull: Yes(77) No(14)
• 47+24*1=71
  71+24*2=119
  119+24*3=331
• 10 years agoHelpfull: Yes(28) No(17)
• @anne the series contain odd number series and from 47 ,71 and 119 are odd number
  and even series contain multiplication by prev odd term...
  and from above option 331 is only odd number...other are even number
  coz the next place is odd so option a is correct....i.e 331
• 10 years agoHelpfull: Yes(12) No(0)
• @ Virendra dubey
  119 is not a prime number
  17*7 = 119
• 10 years agoHelpfull: Yes(8) No(1)
• option a..
  it contain 2 series..
  the odd place contain prime number..
  1st as prime no :47 ,71 ,119
  2nd multiplication by 2 : 47*2, 71*2, 119*2
  
  ....now the next place is odd i.e. 7
  so ans is 331 option a
• 10 years agoHelpfull: Yes(5) No(5)
• Previous Solution by @saraswathy seems right.. but..
  As we don't know the correct option so even i got something too..:-
  Ans: Next two numbers would be 167 and 334.
  as we can see
  47= 12*4-1
  94= 12*8-2 {8=4*2}
  
  71= 12*6-1
  142=12*12-2 {12=6*2}
  
  119=12*10-1
  238=12*20-2 {20=10*2}
  
  next even number that not appeared till now is 14 so
  167=12*14-1
  334=12*28-2 {28=14*2}
  
  Now it depends on the options!
  
• 10 years agoHelpfull: Yes(3) No(0)
• the que contain 2 series even & odd place..
  even place contain multi by 2 to its prev. odd term
  the odd place contain prime number..
  odd series :47 ,71 ,119
  even series: 47*2, 71*2, 119*2
  
  ....now the next place is odd..
  from above given option 331 is only prime no.
  so next 2 term is 331 & 331*2=662
  so ans is option a.
• 10 years agoHelpfull: Yes(2) No(1)
• ans:191
  if we take the alternate terms the series is:47,71,119,...
  71-47=24
  119-71=48
  implies the next term should be 72 more than 119
  =119+72=191
• 10 years agoHelpfull: Yes(1) No(1)
• 47 94 71 142 119 238 ? ?
  47*2=94
  142-94=48(48*1=48)
  71*2=142
  238-142=96(48*2=96)
  119*2=238
  382-238=144(48*3=144)
  191*2=382
  so d next 2 terms can be 191 and 382
• 10 years agoHelpfull: Yes(0) No(0)
• let observe numbers as varied by one like
  47,71,119,? we can find the number in place of q.s mark.
  observe diffrences between
  71-47=24
  119-71=48
  it is multiple of of 24. so next diffrence should be 72 in between ? and 119.
  so we can add 72 to 119. 119+72=191.
  
  Ans:191
• 9 years agoHelpfull: Yes(0) No(0)
• The next term will be 215... 47 , 47*2 , (47*2)-23 , ((47*2)-23 )*2 , ((47*2)-23 )*2 - 23 , (((47*2)-23 )*2 - 23 )* 2 and so on
• 9 years agoHelpfull: Yes(0) No(0)
• (47,71,119.....) another series is (94,142,238,....) 1st series diff is 24,24*2,nxt expected tobe 48*2 similarly proceed ans is 215,430
• 9 years agoHelpfull: Yes(0) No(0)