Question

Mark the greatest number of all:
$3.1\times {10}^3$, $3\times {10}^2$ and $1.1\times {10}^5$

• A. $3.1\times {10}^3$
• B. $3\times {10}^2$
• C. $1.1\times {10}^5$
• D. Can't say anything

Answer 1

The correct option is C $1.1\times {10}^5$

Since we have,
$3.1\times {10}^3$, $3\times {10}^2$ and $1.1\times {10}^5$
$3.1\times {10}^3=3.1\times 1000=3100$
$3\times {10}^2=3\times 100=300$
$1.1\times {10}^5=1.1\times 100000=110000$
Cleary, $110000$ is greatest number of all
Hence, C is the correct answer.