Question

Question 2

In the following question, out of the four options, only one is correct. Write the correct answer:

For a fixed base, if the exponent decreases by 1, the number becomes:
(a)One-thenth of the previous number
(b)Ten times of the previous number
(c)Hundredth of the previous number
(d)Hundred times fo the previous number

Answer 1

For a fixed base, if the exponent decreases by 1, the number becomes one tenth of the previous number.
e.g. for ${10}^5$ exponent decreases by 1.
i.e. ${10}^{5-1}={10}^4\therefore \frac{{10}^4}{{10}^5}=\frac{1}{10}$