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The least among the following is:

0.2
1 ÷ 0.2
0.20
(0.2)2
Explanation:

1÷0.2 =$\dfrac{1}{0.2} $=$ \dfrac{10}{2} $= 5;

0.2 = 0.222...;

(0.2)2 = 0.04.

0.04 < 0.2 < 0.22....<5.

Since 0.04 is the least, so (0.2)2is the least.

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