a batsman in his 10 th innings makes a score of 60 , and thereby increases his average by 3 . what is his average after the 10 th innings ? he had never been ’ not out ’ .
"average score before 10 th innings = 60 - 3 × 10 = 30 average score after 10 th innings = > 30 + 3 = 33 answer : e"
add(subtract(60, multiply(3, 10)), 3)