Question

express the following as rational number -72​

Answer 1

Answer:

Solution

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Correct option is

A

158

Let x=0.53ˉ

⇒x=0.5333...(1)

Multiply (1) by 10 we get

10x=5.333...(2)

Subtract (2) and (1) we get

10x−x=5.3333−0.5333

⇒9x=4.8

⇒9x=524

⇒x=4524

⇒x=158

∴0.53ˉ=158

Answer 2

Answer:

72-2×2×2×3×3 is the answer