| (1 + i) (2 + i) (3 + i) | = - Vidyadip

MCQ

$\left| {(1 + i)\frac{{(2 + i)}}{{(3 + i)}}} \right| = $

A
$ - \frac{1}{2}$
B
$\frac{1}{2}$
✓
$1$
D
$ - 1$

✓

Answer

Correct option: C.

$1$

c
(c)$\left| {(1 + i)\frac{{(2 + i)}}{{(3 + i)}}} \right| = |1 + i|\left| {\frac{{2 + i}}{{3 + i}}} \right| = \frac{{\sqrt 2 \times \sqrt 5 }}{{\sqrt {10} }} = 1$
.

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