Q2 of 196 Page 249

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

For the fixed base, if the exponent decrease by 1, the number becomes one-tenth of the previous number.

e.g; for 10⁷, when the exponent is decreased by 1

it becomes 10^7-1 = 10⁶

Now,

Hence option A is the correct option.

145

There are 864,00 seconds in a day. How many days long is a second?

Express your answer in scientific notation.

Out of the four options, only one is correct. Write the correct answer.

In 2ⁿ, n is known as

Out of the four options, only one is correct. Write the correct answer.

3^–2 can be written as

Out of the four options, only one is correct. Write the correct answer.

The value of is

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