Multiple choice Find the missing term in the following number series. $1, 4, 9, 16, ?, 36$ 20 22 25 27 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The series is perfect squares: 1², 2², 3², 4², 5², 6². The missing term is 25 (5²). 20, 22, and 27 are not perfect squares and don't fit the pattern.