Question

swimming vs. baseball
which values are correct? choose three correct answers.
swimming vs. baseball
likes swimming\tdoes not like swimming\ttotal
likes baseball\ta\tb\t33
does not like baseball\tc\t13\td
total\t39\te\t70

Explanation:

Step1: Analyze intersection value

From V - diagram, $a$ (likes both) is 15.

Step2: Find $b$

$b = 18$ as it's number who like baseball but not swimming.

Step3: Calculate $d$

$d=13 + 22=35$ (sum of two non - overlapping parts outside baseball circle).

Answer:

$a = 15$, $b = 18$, $d = 35$