1) A survey of 11 students showed that 8 liked science, 7 liked mathematics, and 4 liked both. How many students just liked science? Hint: use a Venn diagram.
a) 8
b) 7
C) 5
d) 4

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?