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Is x divisible by 91?
Statement 1:x is divisible by 13.
Statement 2:x is divisible by 42.
Using statement 1,
x is divisible by 13 but we cannot say whether it is divisible by 13*7 or not.
Using statement 2,
We can say that x is divisible by 7.
Using both the statements, we can say that x is divisible by 13*7 = 91.
Hence the answer is d.
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