Question

Insert commas suitably and write the number names according to Indian system of numeration : $77700087$

Answer 1

As per the Indian system of numeration, the following rules are followed to write a number:

We start assigning the commas from the left. As per the norms of the Indian system of numeration, the first comma is placed after the hundreds place and then after every two digits commas inserted.

Therefore,

$77700087\to$$7,77,00,087$

Number name of $7,77,00,087$ : Seven crore seventy-seven lakh eighty-seven