Question

Find the square of $32$ without multiplication.

• A. $32768$
• B. $1024$
• C. $992$
• D. $31744$

Answer 1

Answer: (B)

$1024$

${32}^2=(30+2{)}^2=(30{)}^2+2^2+2\times 30\times 2=1024$

[As $(a+b{)}^2=a^2+b^2+2ab$]