Jharne De and Ranjana Kumar Solutions for Chapter: Playing with Numbers, Exercise 3: Revision Exercise

Simplify the following:
$18+\left[40-\left\{12+12÷3\times 4\right\}\right]$

Simplify the following:
$96÷[18-\{63÷7-(18-5 \mathrm{o}\mathrm{f} 3)\left\}\right]$

Simplify the following:
$65-\left[36-\left\{15-\left(2-\overline{5-3}\right)\right\}\right]$

Simplify the following:
$75÷\left[20-\left\{42÷6-\left(20-3 \mathrm{o}\mathrm{f} 6\right)\right\}\right]$

Simplify the following:
$72-12÷3$ of $2+2\left(18-6\right)÷4$

Simplify the following:
$15-\left[10+\left\{8÷4-2\left(6÷3\right)+3\right\}\right]$

Simplify the following:
$20-\left\{6+4-\left(6+\overline{5-3}\right)\right\}$

The value of $30+3$ of $\left(20-\overline{14-4}\right)$ is $\_\_\_\_\_$ .