Starting from 1 if you are asked to write first 172 digits of the natural numbers , which digit you stop at?

a. 4
b. 7
c. 8
d. 9

• 12345678910=11digits
  11-20=20digits
  21-90=140 digits
  total 171digits are completed
  next number is 91 9is 172th digit & 1 is 173rd digit
  so answer is 9
• 11 years agoHelpfull: Yes(82) No(2)
• 9 is the ans. The natural no are 1234567891011......think to it as digits so from 1-9 we have 9 digits & from 10-99 we have 90 natural no therefore digits from 10-99 are 180 total digits from 1-99=189 now we want 172th digit which is 17 less from 189
• 11 years agoHelpfull: Yes(25) No(8)
• answer is 9.
• 11 years agoHelpfull: Yes(6) No(4)
• Sorry for the prevoius ans this the correct ans
  Ans:4.9
  The series of the digit is 1234567891----10 digit
  0111213141---10 digit(12th digit is 1)
  5161718192 ---10 digit(22th digit is 1)
  0212223242---10 digit(2th digit is 2)
  so it continues upto 172 so ans is 9
• 11 years agoHelpfull: Yes(6) No(2)
• Ans:3.8
  The series of the digit is 1234567891----10 digit
  0111213141---10 digit(12th digit is 1)
  5161718192 ---10 digit(22th digit is 1)
  0212223242---10 digit(2th digit is 2)
  so it continues upto 172 so ans is 8
  
• 11 years agoHelpfull: Yes(3) No(8)
• ans is 9
  upto 91 digits are 171
  next 92 so 172 digit is 9
• 11 years agoHelpfull: Yes(3) No(3)
• 1-9 there are 9 one digit number so the equation will be
  9+x*2=172. the x will be 81.5. i.e 81 complete number including 10.then 81th number is 90.the number of digit upto 90 is 9+81*2=171.the next number is 91 in which 9 is at 172th place.so, 9 is the answer
• 11 years agoHelpfull: Yes(3) No(0)
• Answer is 9
• 11 years agoHelpfull: Yes(2) No(2)
• 1 2 3 4 5 6 7 8 9 10......upto 91
  so 9 is the ans as 9 is 172th digit
• 11 years agoHelpfull: Yes(2) No(0)
• 9 comes in the end
  
• 11 years agoHelpfull: Yes(2) No(0)
• 9 is the answer
• 11 years agoHelpfull: Yes(1) No(0)
• 1-9 there are 9 one digit number so the equation will be
  9+x*2=172. the x will be 81.5. i.e 81 complete number including 10.then 81th number is 90.the number of digit upto 90 is 9+81*2=171.the next number is 91 in which 9 is at 172th place.so, 9 is the answer
• 11 years agoHelpfull: Yes(1) No(0)
• Answer is 8
• 11 years agoHelpfull: Yes(0) No(9)
• ans is 9 1-10= 11digits
  11-20=20 digits .......8*20=160
  160+11=171 final number is 90 so next(172) digit is 9
  
• 11 years agoHelpfull: Yes(0) No(0)
• 91's 9 will be the 172th digit of the natural number !!!
• 11 years agoHelpfull: Yes(0) No(0)
• 9 is the ANS
• 9 years agoHelpfull: Yes(0) No(0)