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Let A = { 1,3,5,7,9 } and B= { 2,4,6,8 }...

Let `A = { 1,3,5,7,9 } and B= { 2,4,6,8 }`. An element `(a,b)` of their cartesian product `Axx B` is chosen at random. The probability that `a + b = 9` is

A

`1//5`

B

`2//5`

C

`3//5`

D

`4//5`

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The correct Answer is:
A
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