16 How many three digit numbers are divisible by 77 ?
Option
a) 108
b) 118
c) 128
d) 138

• if the divisor is "7" instead of "77"
  The answer is 128
• 10 years agoHelpfull: Yes(24) No(0)
• I got 12
  
  3 digit number ranges from 100 to 999
  
  first 3 digit number that is divisible by 77 is 154
  
  so a=154, d=77, nth term= 999
  
  so 154+(n-1)*77=999
  77n-77=845
  77n=922
  
  n=12
• 10 years agoHelpfull: Yes(5) No(1)
• 100 to 999
  7 instead of 77
  7*15=105
  7*143=1001
  so 143-15=128
• 10 years agoHelpfull: Yes(2) No(0)
• ACTUAL ANS:11(NOT GIVEN IN OPTION).
  REASON:
  3 digit number ranges from 100 to 999
  
  first 3 digit number that is divisible by 77 is 154
  
  so a=154, d=77, nth term= 924
  
  so 154+(n-1)*77=924
  77n-77=770
  77n=847
  
  n=11
  
• 10 years agoHelpfull: Yes(0) No(2)
• suppose first term is 154 (as 3 digit point of view )
  common difference is d =77
  last term is
  999 = 154 +(n-1)77 [last term = a + (n-1)d ]
  after solving
  n= 11 is answer
  
• 10 years agoHelpfull: Yes(0) No(0)