1.

Explain this sum don't spam​

Answer»

EXPLANATION:

A = 3 - 1

2 1

B = 3 0

1 - 2

AB = 9 0

2 - 2

Method = 3 × 3 =9

- 1 × 0 = 0

2 × 1 = 2

1 × - 2 = - 2

Multiply the digits A column digits with B COLOUMN digits WITHOUT changing the places



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