 going to take up another very interesting fact. You know we encounter a variety of numbers on a daily basis be it phone number, our roll number or let's say a car's license plate number. We encounter several such numbers on a daily basis. We also know that these numbers are made up of digits and we also know that there are 10 digits 0 1 2 3 4 5 6 7 8 and 9. But the question is why do we call these digits digits. So if you remember friends during a childhood we all used to use our fingers to calculate simple sums and because of this reason friends we call these numbers digits. I hope now a new fact has been added to your knowledge base.