Question

2. Hal forgot the number of people at the

Answer 1

Answer:

Well there is a lot of different numbers he could be thinking of because we are only given 2 useful pieces of information: Four Digits, and, a 3 in the tens place (30).

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This means that the other spaces could be any number.

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If X represents a random number it would be XX3X.

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Eg 1234

Answer 2

2235 is a number that Hal could be thinking of because of the number of digits and the 3 being in the right spot.