a + b = a $\times$ b. If both 'a' and 'b' are integers, how many different prime values can 'b' take?

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Solution

The correct option is C 1
a + b = a $\times$ b
So, the given condition will be satisfied only when both 'a' and 'b' are 0 or both of them are 2.
Out of 0 and 2, '2' is the only prime number.
So, 'b' can take only one prime value, which is '2'.

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