convert the face value of a card into a number
In each pack of cards the numbers 1 to 10 are staring at you.
But for the Jack, King and Queen, you need to convert the face card to a number as follows:
JACK = 11
QUEEN = 12
KING = 13
So the numbers on these cards become:
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)