𝗪𝗛𝗬 𝗱𝗼 𝗜𝗻𝗱𝗶𝗮𝗻 𝗺𝗼𝗯𝗶𝗹𝗲 𝗻𝘂𝗺𝗯𝗲𝗿𝘀 𝗵𝗮𝘃𝗲 𝟭𝟬 𝗱𝗶𝗴𝗶𝘁𝘀❓

𝗪𝗛𝗬 𝗱𝗼 𝗜𝗻𝗱𝗶𝗮𝗻 𝗺𝗼𝗯𝗶𝗹𝗲 𝗻𝘂𝗺𝗯𝗲𝗿𝘀 𝗵𝗮𝘃𝗲 𝟭𝟬 𝗱𝗶𝗴𝗶𝘁𝘀❓

✅Imagine that you have 2 cards and 2 envelopes—2 are blue and 2 are yellow. Now, how many possible ways can you arrange them in a pair? 

Blue card-Yellow card, Blue card-blue envelope, Blue envelope-yellow envelope, blue envelope-blue card; 4 ways.

The same logic can be applied for the number of digits that mobile numbers have.

➼Going back to Permutations and Combinations, how many single-digit numbers do we know? 10.

Thus, if phone numbers were to have 2 digits, how many different number combinations would be available? 10 x 10 = 100.

In the same fashion, if phone numbers were to have 9 digits, this would only satisfy 1,000 million (100 crore) subscribers.

Hence, the 10-digit mobile number. This offers us 10 billion (1000 crore) different combinations, and as for the global population, it is highly unlikely to exceed this capacity.