Multiple choice Directions: Choose the correct alternative and complete the series. 121, 225, 361, (…) 529 484 729 441 Reveal answer Fill a bubble to check yourself A Correct answer Explanation The numbers are 112, 152, 192,…… i.e. 112, (11 + 4 × 1)2, (11 + 4 × 22), ….., The missing number is ( 11+4 × 3)2= (23)2 = 529