R. D. Sharma Solutions for Chapter: Exponents, Exercise 3: EXERCISE

If we express the following number in the standard form, we get $7.23\times {10}^n$, find $n$.
 $723\times {10}^9$

Write the following number in the usual form.

$4.83\times {10}^7$

Write the following number in the usual form
 $3.21\times {10}^5$

Write the following number in the usual form
 $3.5\times {10}^3$

Express the number appearing in the following statement in the standard form

The distance between the earth and the moon is $\mathrm{384,000,000}$ metres.

Answer$=$$3.84\times {10}^{\mathrm{n}} \mathrm{m}$. Find $n$.

If we express the number appearing in the following statement in the standard form, we get $1.2756\times {10}^n$. Find $n$.
Diameter of the earth is $\mathrm{1,27,56,000}$ meters.

If we express the number appearing in the following statement in the standard form, we get $1.46\times {10}^n$. Find $n$.
 Diameter of the sun is $\mathrm{1,400,000,000}$ metres.

If the age of the universe, which is about $\mathrm{12,000,000,000}$ years, is expressed in standard form, we get $1.2\times {10}^m$ years, then find the value of $m$.