Understanding place value and converting between different units like Thousands and Lakhs is a fundamental skill taught in primary school mathematics. Let's look at the exact calculation.
In the Indian comma system, we place a comma after the first three digits (the hundreds place), and then every TWO digits. (e.g., 1,00,000).
In the International comma system, they place commas strictly after every THREE digits. (e.g., 100,000).
There are exactly 100 Thousands in One Lakh.
We can prove this very easily by looking at the number of zeros:
In Western countries (like the USA or UK), they do not use the word 'Lakh' at all. Because their numbering system groups zeros in blocks of three, they literally read the number 1,00,000 as 'One Hundred Thousand' (100,000).
Exactly 10 hundreds make a thousand ($100 \times 10 = 1,000$).
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