Discussion
What is the product of all the numbers in the dial of a telephone ?
Answer: D
Correct answer: None of these
A telephone dial carries the digits 0 to 9, and any product containing a zero is zero. So the answer is 0, which is not among the first three options. The item works by inviting the solver to start multiplying 1 through 9 and never notice the zero - and the three plausible-looking six-figure numbers are there to encourage exactly that.
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