John is choosing a password for his access to the internet. he decided not to use the digit 0 or the letter m. each letter or number may be used more than once. how many passwords of 2 letters followed by 4 digits are possible?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

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Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265