Question

The number of zeroes that come after 1 for 10 crores is
A. 6
B. 7
C. 8
D. 9

Answer 1

Hint:
We will write the given number in figures and will count the number of zeros from 1. Write the zeroes according to the place value system. We can write zeroes starting from one place, tens place, hundredth place and so on.

Complete step by step solution:
We have to find the number of zeros from 1 in the number 10 crores.
We shall begin writing zeroes from unit place, tens place, hundredth place, thousandth place, ten-thousandth place, lakh place, ten-lakh place, crore place and then writing the digit at ten-crore place.
Hence, the number in the figure can be written as 10,00,00,000
Now, we will count the number of digits after 1.
Here, we can observe that there are 8 zeros after 1 in the number 1 crore.
Hence, there are 8 zeros after 1 in 1 crore.

Thus, option C is correct.

Note:
Digit 1 will come at tenth-crore place in the figure of the number. We can also write the given number in the exponential form to find the number of zeros in 1 crore. Also, we should use commas according to Indian numeral system so that mistakes in counting can be avoided.