Answer :

The above question can be written as follows:


Again we have another law of indices which is as follows:


am ÷ an = a (m-n)


Here in the question,


For first part,


a = 10


m = 22


n = 20


m – n = 22 – 20


= 2


For second part,


a = 10


m = 20


n = 20


m – n = 20 – 20


= 0




We have the law of Indices as follows:


a0 = 1


Where a = any integer




So the correct answer is C.

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