Beth

1) Dina has a bag of beads to make a necklace. When asked to tell how many beads are in the bag, she said, “I can make sets of 2 beads, 4 beads, and 5 beads and not have any beads left over. When I divide the beads into 9 sets, I have 7 beads left over.

2) ​An airplane is built to be able to fly on one engine. If the plane's two engines operate independently and each has a 1% chance of failing in a four hour flight. What is the chance the plane will fail to complete the flight due to engine failure?

3) The deck of sixteen cards is thoroughly shuffled. Three cards are drawn from the top of the deck, one at a time. What is the probability the third card is an ace.

4) X || -3 || -2 || -1 || 0 || 1 || 2 || Y || -24 || -5 || 2 || 3 || 4 || 11 || What is the formula?

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