Find the missing term: 3, 5, 9, 17, 33, ? MCQ with Answer and Explanation

Explanation:
Differences are 4, 9, 16, 25, i.e., 2², 3², 4², 5²; next difference is 6²=36, so 55+36=91.

Explanation:
Each letter is shifted backward by 1: F→E, I→H, S→R, H→G; B→A, I→H, R→Q, D→C gives AHQC.

Explanation:
Replacing: 16 + 4 − 2 ÷ 8 × 4. Order of operations: first ÷ and ×: 2÷8=0.25, 0.25×4=1. Then 16+4−1=19. Not matching. Recalculate symbols: + means ×, × means −, − means ÷, ÷ means +. So 16 ÷ 4 × 2 − 8 + 4 becomes 16 + 4 − 2 ÷ 8 × 4. Yes 16 + 4 − (2÷8)×4 = 20 − 0.25×4 = 20 −1 =19. Not in options. Perhaps left to right. Some exams ignore BODMAS. If left to right: 16+4=20, 20−2=18, 18÷8=2.25, 2.25×4=9. Not. Perhaps the expression is evaluated differently. Let's choose a standard one.