The following numbers are provided: 0, 1, 3, 4, 6, 7, 8 Many arrays of even hundreds of numbers less than 400 on condition that they cannot be repeated are ... A.20, B.26, C.30, D.36, E.40

Question

Please someone help me. I will really appreciate it :)

Answer 1

I believe this is asking for even numbers less than 400?

In this case,

Let's 0 be the first digit,

Then the second digit options would be 1, 3, 4, 6, 7, 8

The last digit can only be 4, 6, 8 (due to even number)

Then, there are (5)(3) = 15 numbers

Now, let's 0 not be the first digit

Since it is less than 400,

The first digit can only be 1 and 3, let 1 be the first digit

The second digit can be 0, 3, 4, 6, 7, 8

The last digit can be 0, 4, 6, 8 (due to even number)

The same goes for first digit is 3:

Thus, there are (2)(5)(4) = 40

There would be 40 + 15 = 55 even numbers (which is not one of the options), could you clarify the question?