Question

Which one of the following expressions gives the answer as 36?

• A. $\left[\right(15-6)+(20÷2\left)\right]\times 3$
• B. $\left[\right(21÷7{)}^2\times (17-9)]÷2$
• C. $3\times \left[\right(6+20)÷2]$
• D. $(7\times 4)+22$

Answer 1

The correct option is B $\left[\right(21÷7{)}^2\times (17-9)]÷2$

a. $\left[\right(15-6)+(20÷2\left)\right]\times 3=\left[\right(9)+(10\left)\right]\times 3=57$

b. $\left[\right(21÷7{)}^2\times (17-9)]÷2=[(3{)}^2\times (8\left)\right]÷2=36$

c. $3\times \left[\right(6+20)÷2]=3\times \left[\right(26÷2\left)\right]=3\times 13=39$

d. $(7\times 4)+22=(28+22)=50$