Eighteen lakh nineteen thousand eight hundred eighteen is _________. A. 1,81,81,818 B. 18,19,818 C. 18,17,818 D. None of these
Hint: For solving this problem, we must know the concept of naming of numbers in Indian number system because it involves the terms like lakh, crores. So, by using this methodology we can easily solve our problems.
Complete Step-by-Step solution: In English system, we have special names like million, billion, trillion etc. But, here in India these terms are not so popular. There are three special numbers in the Indian numbering system which include lakh, crore and arab. A lakh can be expressed as 1,00,000 and a crore is equal to a hundred lakhs and is expressed as 1,00,00,000. An arab is 100 crores and is expressed as 1,00,00,00,000. For relating both the systems, 1 million is equivalent to 10 lakhs and 1 billion is equal to 100 crores. So, eighteen lakh nineteen thousand eight hundred eighteen is can be written as \[18\times 100000+19\times 1000+8\times 100+18=18,19,818\]. Hence option (b) is the correct.
Note: The key concept involved in solving this problem is the knowledge of naming of numbers in Indian lingual system. Some terms are different in Indian English system. So, the knowledge of both the systems will help students to survive in two different cultures.