QUESTION

# Express in Indian number system4,456,765$(a)$ Four crore forty five lakh seven hundred sixty five.$(b)$ Forty four lakh fifty six thousand seven hundred sixty five$(c)$ Forty four crore five lakh seven hundred sixty five$(d)$ Forty five lakh seven hundred sixty five

Hint: In this question use the fact of Indian number system that 1 lakh = 100,000, then apply a unitary method to know the value of 10 lakh and then for 44 lakh. This will help figuring out this problem statement.

Given number is
4,456,765
As we know 1 lakh = 100,000
So 10 lakh = 1,000,000.
So 44 lakh = 4,400,000
Now as we know 10 thousand = 10,000
So 56 thousand = 56,000
So 44 lakh 56 thousand = 4,456,000
Now as we know seven hundred sixty five = 765
So 44 lakh 56 thousand 765 = 4,456,765.
So this number is written as
Forty four lakh fifty six lakh seven hundred sixty five.
Hence option (B) is correct.

Note: There can be another way to approach this problem, it’s based upon the basic understanding that from the rightmost digit the third digit resembles the hundredth position, then next digits to right starts to be in thousandth place till next two only, and then lakh place arrives.