Question

Convert $(2143{)}_5$ to base $10$

• A. $298$
• B. $300$
• C. $168$
• D. $276$

Answer 1

The correct option is A $298$

$125\left(5^3\right)$	$25\left(5^2\right)$	$5\left(5^1\right)$	$1\left(5^1\right)$
$2$	$1$	$4$	$3$
$125\times 2$	$25\times 1$	$5\times 4$	$3\times 1$

Converting this into decimal we get $125\times 2+25\times 1+5\times 4+3\times 1$

$=250+25+20+3=298$

So correct answer will be $298$.