Question

Trick: If any multiplier (11 to 19) has to be multiplied with multiplicand then every digit of multiplicand is multiplied with multiplier. Step by step can be found the product of the number.

Answer 1

Example : $123 \times 12=?$

Soln : Quick : Steps (i) $3 \times 12=36 \rightarrow 36$

(ii) $2 \times 12=24 \rightarrow 24$

(iii) $1 \times 12=12 \rightarrow 12$

$\therefore$ Product of the number $=12+{ }_2 4+{ }_3 6=1476$ Ans.