Question

Which of the following is an irreducible form of 1122?

• A. $2\times 9\times 9\times 17$
• B. $2\times 3\times 11\times 17$
• C. $2\times 3\times 9\times 17$
• D. $3\times 3\times 11\times 17$

Answer 1

The correct option is B $2\times 3\times 11\times 17$

1122 can be factorised as,
$1122$
$=2\times 561$
$=2\times 3\times 187$
$=2\times 3\times 11\times 17$
Since the above expression can not be factorized further.
Therefore,
$2\times 3\times 11\times 17$ is an irreducible form of 1122.