5+i^ 22 +i^ 36 +i^ 56 = - Vidyadip

MCQ

$5+i^{22}+i^{36}+i^{56}=$

A
-6
B
8
C
-8
✓
6

✓

Answer

Correct option: D.

6

(D)
$5+ i ^{22}+ i ^{36}+ i ^{56}=5+\left( i ^2\right)^{11}+\left( i ^2\right)^{18}+\left( i ^2\right)^{28}=6$

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