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January 30, 2015

January 30, 2015

Posted by **BRYAN** on Tuesday, February 2, 2010 at 4:32pm.

a) What is the smallest number of cards the church must have to be able to display any combination of 3 hymns?

b) If the number 6 can be used as an upside-down 9, how many cards can be saved from your anwswers to (a)?

- MATHS -
**bobpursley**, Tuesday, February 2, 2010 at 4:53pmthe first card: 1-7

the second card: 0-9

the third card: 0-9

I calculate so that is lets see, 28 cards?

YOu can save three two cards, the second set of 9's.

- MATHS -
**BRYAN**, Tuesday, February 2, 2010 at 5:02pmSorry, I'm still don't understand the suppose answer is a) 66 b) 4

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