Question

A= 5,5²,5³,5⁴ in set builder form

Answer 1

A={x: x = 5^n where n belong to N and 0<x<5}

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Answer 2

Answer:

here, Let A = {5, 25, 125, 625}

we observed that , 5 = 5¹ , 25 = 5², 125 = 5³

625 = 5⁴

so, we can write A in set - builder form,

A = {x : x = 5ⁿ , n\inN and 1 ≤ n ≤ 4}