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Answered

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x = { multiple of 2 less than 21 }
a = { multiples of 4 less than 21 }
b = { multiples of 6 less than 21 }

Sagot :

Rojeerainidn

Answer:

The number of multiples of any number is infinite. For example, multiples of 21 are 21, 42 and 63.

The multiples of 21 are 21, 42, 63, 84, 105, 126, 147, 168, 189 and 210.

The multiples of 21 are, 21, 42, 63, 84, 105, 126, 147, 168, 189 and 210.

:)