Question

How many zeroes are there in one lakh?
A) $4$
B) $3$
C) $5$
D) $2$

Answer 1

Hint: We know that according to Indian number system $1000$ is termed as thousand not as ten hundred. We know that Indian numbering system and the International numbering system are different. Here we will first represent one lakh in mathematical form and then with the help of thousands and lakh terms we get the required value.

Complete step by step answer:
As we know, ‘Million’ is a term used in the International numbering system whereas lakh is a term used in the International unit system.
We know that one lakh can also be called as one hindered thousands.
Since we do not know the number of zeros in one lakh, we will use the thousands.
We know that ten hundred makes one thousand i.e.
$10 \times 100 = 1000$
Now we know that a hundred thousands makes one lakh, it can also be written as:
$100 \times 1000 = 1,00,000$
Here we can count the number of zeros in one lakh.
So we can see that the number of zeros in one lakh is $5$ .
Hence the correct answer is option (C) - $5$

Note: We should know that the number system can be defined as the writing system for expressing numbers and represents the numbers for the given set, using digits or the other symbol in a consistent manner. There are two types of number system: The Indian number system and the International number system.
Similarly if we have to find the number of zeros in one crore we can write them as:
Ten lakhs make one million i.e.
$10 \times 1,00,000 = 1,000,000$
Again. we know that ten million makes one crore, so it gives:
$10 \times 1,000,000 = 1,00,00,000$