MCQ
$27-\Big[18-\big[16-\big(5-\overline{4-1}\big]\Big]=\ ?$
- A$25$
- ✓$23$
- C$20$
- DNone of these.
✓
Answer
Correct option: B.
$23$
Given expression:
$27-\Big[18-\big[16-\big(5-\overline{4-1}\big]\Big]$
$= 27 - [18 - \{16 - (5 - 3)\}] [$Removing bar$]$
$= 27 - [18 - \{16 - 2\}] [$Removing parentheses$]$
$= 27 - [18 - 14] [$Removing braces$]$
$= 27 - 4 [$Removing square brackes$]$
$= 23$
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