Justin has 20 pencils 25 erasers and 40 paper clips. he organizes them into groups with the same number of items in each group. all the items in a group will be the same type. how many items can he put in each group?

Solve the system by the elimination method. 2x + y - 4 = 0 2x - y - 4 = 0 when you eliminate y, what is the resulting equation? a.x = 0 b.4x = -8 c.4x = 8

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm