alleryThe modulus |3 + i| equals:
A3
B√10
C4
D√3
Answer & Solution
Correct answer: B. √10
|z| = √(a² + b²) for z = a + ib.
We have **So |3 + i| = √(3² + 1²).
So **So |3 + i| = √10.**.
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