8+88+888+…..+8888……..8888. There are 21 “8” digits in the last term of the series. Find the last three digits of the sum.

• calculating unit digit we get 21*8=168 ,so 16 is our carry which is added with 20*8 =176(ten's digit),then carry 17 is added with 19*8=169(hundred;s digit).So the answer is 968.
• 5 years agoHelpfull: Yes(3) No(0)
• 21*8=168
  unitplace 8
  20*8=160+16=176
  tensplace 6
  19*8=152+17=169
  sohundreds place 9
  last three digits 968
• 5 years agoHelpfull: Yes(3) No(0)
• 168
  it says that it contains 21 numbers to be added so the last 3 digit is 21*8
• 5 years agoHelpfull: Yes(2) No(1)
• The answer will be 968 as:
  (21*8) = 168
  (20*8) = 160
  (19*8) = 152
  Now
  168 --> 8 remains 16 gets carried
  160 + 16 --> 6 remains 17 gets carried
  152 + 17 --> 9 remains 16 gets carried
  hence the last three digits are 9, 6 and 8.
• 5 years agoHelpfull: Yes(1) No(0)
• There are mainly 21 8's in the unit digits then 21x8=168,Here units place value is 8,
  there are mainly 20 8's in the ten's place then 20x8=160,but in the above there is 16 then 160+16=176 then 10's place value is 6.
  There are mainly 19 8's in the 100's place then 19x8=152 but there is 17 extra from the above,then 152+17=169 then 100's place value is 9.
  Therefore the last three digits in the sum is 968.
• 5 years agoHelpfull: Yes(1) No(0)
• Given 8+88+888+..........
  so in units place there will be 21 8's ,so 21*8=176
  7 in units place carry is 17
  next column have 20 8's so 20*8=160+16=176
  6 in tens place and carry is 17
  next column consists of 19 8's, so 19*8=172+17=189
  9 in hundreds place
  so the last three digit number is 968
• 5 years agoHelpfull: Yes(0) No(0)
• unit digit sum=(8*21)=168
  tenth digit sum=(8*20)=160+16=176
  hundredth place sum=(8*19)=152+17=169
  so answer will be 968
• 5 years agoHelpfull: Yes(0) No(0)
• Given 8+88+888+..........
  so in units place there will be 21 8's ,so (21*8)=168
  8 in units place carry is 16
  next column have 20 8's so (20*8)=160+16=176
  6 in tens place and carry is 17
  next column consists of 19 8's, so (19*8)=152+17=169
  9 in hundreds place
  so the last three digit number is 968
  Ans
• 5 years agoHelpfull: Yes(0) No(0)