In the given series find the number which is wrong.

215,28,63,126,7,343

a) 215
b) 28
c) 126
d) 343

• a) 215 bcoz its not a multiple of 7.. rest all are
• 10 years agoHelpfull: Yes(31) No(3)
• Ans 343
  as
  215=6*6*6-1
  28=3*3*3+1
  63=4*4*4-1
  126=5*5*5+1
  7=2*2*2-1
  343 should be 7*7*7+1= 344 but it is 343
  
• 10 years agoHelpfull: Yes(25) No(10)
• 215 is wrong in the given series because 215 only is not divided by 7
• 10 years agoHelpfull: Yes(7) No(1)
• In the given series 343 not follow the sequence of alternate odd even
  215-odd
  28-even
  63-odd
  126-even
  7-odd
  343-odd
  hence 343 is wrong
• 9 years agoHelpfull: Yes(3) No(1)
• ans 215.because all other number will divide by 7 except 215
• 10 years agoHelpfull: Yes(2) No(0)
• 343
  
  
  216=6*6*6 -1
  28=3*3*3 +1
  63=4*4*4 -1
  126=5*5*5*5 +1
  7=2*2*2 -1
  343= 7*7*7 which z odd
• 9 years agoHelpfull: Yes(1) No(1)
• a>215 is correct beacuse all the numbers are divisible by7 and it is not
• 9 years agoHelpfull: Yes(1) No(1)
• thnks,......,....
• 10 years agoHelpfull: Yes(0) No(0)
• 215 would be the answer.
• 10 years agoHelpfull: Yes(0) No(0)
• 215 BCZ IT IS NOI DEVIDED BY 7
• 10 years agoHelpfull: Yes(0) No(1)
• ans is 215
  it is not divisible by 7
  
• 9 years agoHelpfull: Yes(0) No(0)
• Ans:344;
  215=6*6*6-1
  28=3*3*3+1
  63=4*4*4-1
  126=5*5*5+1
  7=2*2*2-1
  343 should be 7*7*7+1= 344 but it is 343
• 9 years agoHelpfull: Yes(0) No(0)
• 215 bz it is not divide by 7
• 9 years agoHelpfull: Yes(0) No(0)
• except 215 all are multiples of 7
• 9 years agoHelpfull: Yes(0) No(1)
• 343 is the wrong number
• 8 years agoHelpfull: Yes(0) No(0)
• 7 is prime others ar not so ans 7
• 8 years agoHelpfull: Yes(0) No(0)
• d)343 its 344
• 8 years agoHelpfull: Yes(0) No(0)
• all r multiples of 7 except 215
• 8 years agoHelpfull: Yes(0) No(0)
• a)215 all are multiples of 7
  
• 7 years agoHelpfull: Yes(0) No(0)
• Ans is 215... bcoz rest all r multiples of 7
• 7 years agoHelpfull: Yes(0) No(0)
• a) 215 because of 215 is not divisible by 7
  Rest all multiple of 7
• 7 years agoHelpfull: Yes(0) No(0)
• Correct answer is: D 343
  because if we consider divisibility by 7 then their is no series formed.
• 6 years agoHelpfull: Yes(0) No(0)