Question

Evaluate $31\times 33$ using odd-odd pattern.

• A. $423$
• B. $823$
• C. $923$
• D. $1023$

Answer 1

Answer: (D)

$1023$

$31\times 33=(30+1)$$\times$$(30+3)$

$=$ $900+90+30+3$ $=$ $1023$

Hence, Option D is correct.