Generalised form of a two-digit number xy is?
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2-digit number xy can be written as 10x + y. 2 will always divide 10x. So, 10x + y will be exactly divisible by 2 if y = 0, 2, 4, 6 or 8. A 3-digit number xyz can be written as 100x + 10y + z.
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2-digit number xy can be written as 10x + y. 2 will always divide 10x. So, 10x + y will be exactly divisible by 2 if y = 0, 2, 4, 6 or 8. A 3-digit number xyz can be written as 100x + 10y + z.
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