Find out the wrong term.
6, 15, 35, 77, 165, 221

A. 35 B. 77
C. 165 D. 221

• Multiplying consecutive prime numbers
  2,3,5,7,11,13,17,19....
  2x3=6
  3x5=15
  5x7=35
  7x11=77
  11x13=143
  13x17=221
• 10 years agoHelpfull: Yes(4) No(1)
• Adding Prime numbers
  6*2+3=15
  15*2+5=35
  35*2+7=77
  77*2+11=165
  165*2+13=343
• 12 years agoHelpfull: Yes(1) No(3)
• 6+6=>12+3=15,
  15+15=>30+5=35
  35+35=>70+7=77
  77+77+>154+11=165
  165+165=>331+13=144,,,,,,,3,5,7,11,13,are prime numbers
  
• 9 years agoHelpfull: Yes(1) No(0)
• multiply with 2 and prime no.
  6*2+3
  15*2+5
  35*2+7
  77*2+11
  165*2+13=343
  so 221 wrong
• 9 years agoHelpfull: Yes(0) No(1)
• 6×2= 12+3=15
  15×2= 30+5=35
  35×2= 70+7=77
  77×2= 154+9=163
  163×2= 326+11=337
  
  So 165 and 221 both are wrong
• 6 years agoHelpfull: Yes(0) No(0)