Find avg of all nos. which lies b/w 1 and 100 & r divisible by 7.

• 7(1+2+3+.....14)
  7* (n+1)/2 where n=14
  7* (15/2)
  7*7.5
  52.5
  
• 10 years agoHelpfull: Yes(8) No(0)
• 52.5
  
  Numbers lies between 1 to 100 which divisible by 7 is,
  
  7,14,21,28,35,42,49,56,63,70,77,84,91,97
  
  Sum = 735
  Total numbers = 14 numbers
  
  Average = Sum of all numbers/Total numbers
  = 735/14
  = 52.5
• 12 years agoHelpfull: Yes(7) No(6)
• Numbers lies between 1 to 100 which divisible by 7 is,
  7,14,21,28,35,42,49,56,63,70,77,84,91,98
  735/14
  ANS:52.5
• 12 years agoHelpfull: Yes(6) No(1)
• Formula: (n/2)(a+l) where n=how many numbers, a=1st digit,l=last digit
  so a=7,l=98 , n=14
  hence
  (14/2)(7+98)
  =7*105
  avg=(7*105)/14
  =105/2
  =52.5
• 9 years agoHelpfull: Yes(3) No(0)
• 7+14+21+28+35+42+49+56+63+70+77+84+91+98= 735/14=55.5
• 8 years agoHelpfull: Yes(0) No(0)
• 52.5
  no of terms,n =14
  first term,a=7
  last term,l=98
  sum = (n/2)*(a+l)
  => (14/2)*(7+98) = 735
  for average = 735/14 =52.5
  avrg= 52.5 :)
• 8 years agoHelpfull: Yes(0) No(0)