in a group of 65 people , 40 like cricket , 10 like both cricket and tennis . how many like tennis ?
"make a venn diagram , and enter your data . let the number of people who like only tennis be x x + 10 + 30 = 65 x = 25 so number who like tennis = 10 + 25 = 35 answer b"
add(add(10, subtract(40, 10)), 10)