From Statement A:
Clearly, it is not possible to find out the number of members who play only Hockey as there are many unknown factors.
From Statement B:
If we assume a + b + c + d = 5x, where x is an unknown variable then c = 3x
Hence, a + b + d = 2x
However, we cannot find the answer.
Now, d = 0
So a + b = 2x
By using the summation of sets we get,
130 + 150 + 140 - c - (a + c) - (b + c) + c = 300
120 = a + b + 2c = 2x + 6x = 8x
∴ x = 15
∴a + b = 30
Hence, number of members who play only Hockey = 130 - a - c= 130 - 4 - a
The above cannot be determined as we do not know the value o f ‘a’.