1.When the piggy bank was opened, it yielded $4.05 in nickels and pennies. If there were 157 nickels and pennies altogether, how many of each were there in the bank? [Instructions: Indicate pennies using P and nickels using N. Example: N=1, P=2]

2. Find four consecutive ODD integers such that 5 times the sum of the first and third is 26 more than 4 times the fourth. [Instructions: Type all four numbers separated by commas. Example: 1, 2, 3, 4]

3. Only 4/9 of the university students wanted to become math teachers. If 3500 did NOT want to become math teachers, how many university students were there?

4. The velvet bag contains 10 gold coins and 7 silver coins. A coin is randomly drawn from the bag and NOT replaced. Then a second coin is randomly drawn. What is the probability that both coins are gold? [Instructions: Use / to indicate a fraction line.]