Question

Shikha makes a profit of rupees eighty five crore three lakh fifty five thousand thirty nine. Her profit can be written in numerals as ______.
\[
  A.{\text{ }}Rs.850,355,039 \\
  B.{\text{ }}Rs.85,03,55,039 \\
  C.{\text{ }}Rs.85,03,55,390 \\
  D.{\text{ }}Rs.8,53,67,249 \\
 \]

Answer 1

Hint- In order to find the correct option differentiate between the correct option on the basis of digits represented on the option as well as the system of representation.
Complete step-by-step solution -
As we know that rupees eighty five crore is represented as $Rs.85,00,00,000$ , rupees three lakh is represented as $Rs.3,00,000$ , rupees fifty five thousand is represented as $Rs.55,000$ and rupees thirty nine as $Rs.39$
So the final amount can be found out by adding them together.
So net amount is:
$
   = Rs.85,00,00,000 + Rs.3,00,000 + Rs.55,000 + Rs.39 \\
   = Rs.85,03,55,039 \\
 $
If we start with just the number without considering the number system. The number given in words is: \[Rs.850355039\] without commas.
Both the option A and option B represents the same value.
Now we have two types of number systems. Indian number system which consists of terms like thousands, lakhs, crores etc. and in the international number system we have thousands, million, billion etc.
Since in the above problem the number is represented in crore, lakh and thousand.
Hence it is represented as \[Rs.85,03,55,039\] .
So, option B is the correct option.

Note- In such type of problem give importance to not only the digits of the number but also on the position of the commas which is due to the type of number system. The main difference between the Indian number system and International number system is the position of the separators or commas .In Indian numbering system, lakhs are written after thousands while in international numbering systems, millions are written after thousands. Indian system is followed in India, Pakistan and Bangladesh. It is still called as Indian number system owing to its Union (Indian sub-continent) during the British rule.