There are 70 students in math class (Group A) class, and 40 of them are also taking biology (Group B) course. The total students in biology (Group B) are 60. There are 25 arts (Group C) students in the department, and 10 of them are taking math.

Define how many people there are:

a) A or B, b) A and B, c) C xor A, d) B or C

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Which number completes the inequality? 2/3 < _ < 7/9

Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices