The correct option is C Tens < Hundreds < Thousand < Ten thousands < Lakh < Ten lakhs
Accrding to Indian place-value sysytem number is:
Ten lakhsLakhTen ThousandsThousandsHundredsTensOnes10,00,0001,00,00010,0001,000100101
∴ the correct order is :
Tens < Hundreds < Thousand < Ten thousands < Lakh < Ten lakhs