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1. The number is 841

   So we can see that the number is odd.

   Is the number even or odd?

   Here we have a 3-digit number that can be written as:

   a*100 + b*10 + c

   Here we know that:

   “the tens digit of a number is 4 times the units digit“

   b = 4*c

   “the hundreds digit is twice the tens digit“

   a = 2*b

   Now, remember that a, b, and c, are numbers on the set {0, 1, …, 8, 9}

   And if we replace the first equation into the second, we get:

   a = 2*(4*c) = 8*c

   Now, the only value of c that we can use such that a is a single digit whole number is c = 1

   (if c = 0, then our number is zero)

   a = 8*1 = 8

   b = 4*1 = 4

   c = 1

   The number is 841

   So we can see that the number is odd.

   If you want to learn more about odd numbers:

   https://brainly.com/question/543861

   #SPJ1

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