Q25 of 196 Page 249

Out of the four options, only one is correct. Write the correct answer.
The standard form for 234000000 is

Standard form is a form of writing very large or very small numbers without negative exponent and in a précised form, with decimal after one digit.

We know that,

234000000 = 234 × 1000000

234000000 = 2.34 × 100 × 10⁶

234000000 = 2.34 × 10² × 10⁶

By laws of exponent,

x^m × xⁿ = x^{m + n}

⇒234000000 = 2.34 × 10^{2 + 6}

⇒ 234000000 = 2.34 × 10⁸

Hence, the standard form for 234000000 is 2.34 × 10⁸.

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

The value of (7^–1 – 8^–1)^–1 – (3^–1 – 4^–1)^–1 is

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

The standard form for 0.000064 is

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

The usual form for 2.03 × 10^–5

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

is equal to

Out of the four options, only one is correct. Write the correct answer.The standard form for 234000000 is