n the series, only one number is wrong. Find out the wrong number.

518, 1030, 1130, 2858, 3054, 7160, 7474

• first of I say that above it is given it is a series so 3054 is not correct.
  then solution is:-
  difference bet first two term=1030-518=512=8^3.
  then 1130-1030=100=10^2
  then 2858-1130=1728=12^3
  then 3054-2858=196=14^2
  BUT 7160-2054=4106!=16^3(4096)
  then if 7474-4096=324=18^2
  So answer is 7160.
  
• 10 years agoHelpfull: Yes(25) No(1)
• only 3054 is completely divisible by 3.
  that's why ans: is 3054.
• 10 years agoHelpfull: Yes(9) No(3)
• 3054
  ans......
  
  
• 10 years agoHelpfull: Yes(6) No(2)
• first we substract two consecutive numbers.... the diff is...
  512 100 1728 196 4106 314
  which is .
  (8^3) (10^2) (12^3) (14^2) and the next two are not right in this series
  so wrong is 7160...
  
• 10 years agoHelpfull: Yes(3) No(2)
• ALL THE GIVEN NOS ARE NOT DIVISIBLE 3 EXCEPT 3054.
  SO ANSWER IS 3054
• 10 years agoHelpfull: Yes(2) No(2)
• correct ans. is 7160.
• 10 years agoHelpfull: Yes(2) No(0)
• all r 4 digit except518
• 10 years agoHelpfull: Yes(2) No(2)
• @karthikeyan........ wt abt 1130????
• 10 years agoHelpfull: Yes(1) No(1)
• Ans is 7160
  becoz it is divisible by 4 bt others r nt.so its a odd man out no.
• 10 years agoHelpfull: Yes(1) No(0)
• 2858
  since the digital sum of all number is in 3 or 4 or5 except 2858
• 10 years agoHelpfull: Yes(0) No(1)
• sum of digits of all the numbers are 14,4,5,23,12,14,22 respectively.all the sums are not prime except 5 .so the number 1130 hose sum is 5 is odd one
• 10 years agoHelpfull: Yes(0) No(3)
• sum of the digit all number is not prime number 2858 is prim number
• 10 years agoHelpfull: Yes(0) No(0)
• all given numbers are divisible of 3 but
  expect 2858 so 2858 wrong number
  
• 10 years agoHelpfull: Yes(0) No(1)