Question

Which of the following is rational number
5+^2
^2+^7
2^3-7
3-5^9

Answer 1

Answer:

We have,

(−2

5

/3

5

)=(−2×−2×−2×−2×−2)/(3×3×3×3×3)=(−32/243)

(−3

3

/7

3

)=(−3×−3×−3)/(7×7×7)=(−27/343)

Then,

=(−32/243)×(−27/343)

=(−32×−27)/(243/343)

=(32/3087)