Electric current is a flow of electric charge carried by moving electrons in a wire. The charge is carried through wires to homes and businesses to provide electricity. On the other hand, an insulator prevents or blocks the flow of electricity or electric current.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.