Simplify: 21 − [6 + 7 − {3.22 − (1.1 × 0.2)}]
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 11.
21 − [6 + 7 − {3.22 − (1.1 × 0.2)}]
⇒ 21 − [13 − {3.22 − (1.1 × 0.2)}]
⇒ 21 − [13 − {3.22 − 0.22}]
⇒ 21 − [13 − 3]
⇒ 21 - [10]
⇒ 11