Numerical for five hundred three million eight thousand seven hundred two is
$
  (a){\text{ 50,03,80,702}} \\
  (b){\text{ 50,38,00,702}} \\
  (c){\text{ 503,008,702}} \\
  (d){\text{ 50,30,80,702}} \\
 $

Hint: In this question use the concept that the leftmost digit is the units place, then two digits after left most comprises hundredth digit, after it we have thousand, ten thousand and then lakh and ten lakh after this we came across to crore and ten crore. Use this concept to get the answer.

Complete step-by-step answer:
As we know 1 lakh = 100,000.

So 10 lakh = 1,000,000.

Now as we know 1 million = 10 lakh.

Therefore 1 million = 1,000,000.

So five hundred three (503) million is = 503,000,000.

Now as we know 1 thousand = 1000.

So 503 million 8 thousand = 503,008,000.

Now as we know seven hundred two = 702.

So 503 million 8 thousand 702 = 503,008,702.

So this is the required number of five hundred three million eight thousand seven hundred two.

So this is the required answer.

Hence option (C) is correct.

Note: We often come across problems relating to this same concept, sometimes the numerical number is given and the English representation is asked that is exactly the converse of what is given in this problem, in those problems too this same concept is valid.