Question

If $27\times 3=243$ and $5\times 4=80$
Then the value of $3\times 7$ is ___.

• A. $84$
• B. $147$
• C. $63$
• D. $23$

Answer 1

Answer: (B)

$147$

We can observe that,
$27\times 3=81$ and $81\times 3=243$

Similarly,
$5\times 4=20$ and $20\times 4=80$

Hence,
$3\times 7=3\times 7\times 7=147$