Question

When rolling two dice , there are blank different ways to roll at least one 4.

Answer 1

11

Explanation:

At least one means 1 being 4 or 2 of them being 4 this in case.

You could set a table:

1| 1 2 3 4 5 6

2| 1 2 3 4 5 6

3| 1 2 3 4 5 6

4| 1 2 3 4 5 6

5| 1 2 3 4 5 6

6| 1 2 3 4 5 6

There are 11 different ways to get at least one 4.

See this:

(first dice, second dice)

(1,4)

(2,4)

(3,4)

(4,4)

(4,5)

(4,6)

But there is also

(4,1)

(4,2)

(4,3)

(4,4) already counted earlier so don't count this one again

(4,5)

(4,6)

Answer 2

`3`

Explanation:

These
`3` ways are:

1. The first die showing a 4 and the second die showing a different number
2. The second die showing a 4 and the first die showing a different number
3. Both dice showing 4s