Question

$(101 \times 99)$
​

Answer 1

9999

hope this helps you friend

Answer 2

$\huge\bf\red{AnsweR}$

${By~using~indentity~(x+a)~(x+b)}$

$(100 + 1)(100 - 1)$

$100 {}^{2} + [1 + ( - 1)]100 + (1 \times - 1)$

$10000 + 0 + (- 1)$

$9999 \: ans$