The average of 5 consecutive numbers is n. If the next two numbers are also included, the average will :

a. increases by 1
b. remain the same
c. increase by 1.4
d. increase by 2

• let x is first no then x,x+1,x+2,x+3,x+4 are consecutive nos
  avg of this 5 nos is (x+x+1+x+2+x+3+x+4)/5=n
  x+2=n ;n=x+2
  add next 2 nos new avg is (x+x+1+x+2+x+3+x+4+x+5+x+6)/7=m
  x+3=m ;m=x+3
  new avg-old avg=x+3-x-2
  =1
  increased by 1
  
• 10 years agoHelpfull: Yes(4) No(1)
• let x is first no then x,x+1,x+2,x+3,x+4 are consecutive nos
  avg of this 5 nos is (x+x+1+x+2+x+3+x+4)/5=n
  x+2=n ;n=x+2
  add next 2 nos new avg is (x+x+1+x+2+x+3+x+4+x+5+x+6)/7=m
  x+3=m ;m=x+3
  new avg-old avg=x+3-x-2
  =1
  increased by 1
  
• 9 years agoHelpfull: Yes(2) No(1)
• a.increases by 1
• 4 years agoHelpfull: Yes(0) No(0)