simso math combinatorics chicken and cows

1. 1. If 𝑛 + 6 = 42 What is N?

• A. 36

• B. 46

• C. 56

2.  Old McDonald has 6 chickens and cows in total. He counted 20 legs altogether. How many chickens and cows are there?

• A. 4 chickens and 4 cows

• B. 4 chickens and 2 cows

• C. 4 cows and 2 chickens

3. Old McDonald has 35 chickens and cows in total. He counted 108 legs altogether. How many chickens and how many cows are there?

 

• A. 19 cows and 16 chickens

• B. 19 chickens and 16 cows

• C. 18 cows and 16 chickens

4  Old McDonald has 40 chickens and cows in total. He counted 108 legs altogether. How many chickens and how many cows are there?

• A. 15 chickens and 26 cows

• B. 14 cows and 26 chickens

• C. 26 cows and 14 chickens

15. 5.   Old McDonald has 16 chickens and cows in total. He counted 54 legs altogether. How many chickens and how many cows are there?

• A. 11 cows and 5 chickens

• B. 5 cows and 11 chickens

• C. 4 cows and 12 chickens

6. 6.   Old McDonald has 11 chickens and cows in total. He counted 40 legs altogether. How many chickens and how many cows are there?

 

• A. 9 chickens and 2 cows

• B. 9 cows and 2 chickens

• C. 9 cows and 3 chickens

7. 7. How many different ways can you arrange the colors red, blue, and green in a row?

• A. 8

• B. 7

• C. 6

8. 8. How many different ways can you arrange your toys on a shelf if you have 4 toys (e.g., teddy bear, car, doll, ball)?

• A. 24

• B. 25

• C. 26

9. 9.   Sarah has 3 different dresses (red, blue, and green) and 2 different pairs of shoes (black and white). How many different outfits can she create by combining a dress with a pair of shoes?

• A. 6

• B. 7

• C. 8

10.   10. There are 5 children in a race, and they will be awarded gold, silver, and bronze medals. How many different ways can the medals be awarded?

• A. 50

• B. 60

• C. 70