After duplex numbers, let us learn multiplication by triplex numbers. As the name suggests, numbers like 111, 222, 333 are triplex numbers. The method is similar to that of multiplication by duplex ...
Row 1 => x + y * 2nd Number’s Unit Place Digit = 12 + 13 * 3 = 25 * 5 = 75 Row 2 => x + y * 2nd Number’s Unit Place Digit = 15 + 16 * 6 = 31 * 6 = 186 Row 3 => x + y * 2nd Number’s Unit Place Digit = ...
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