Correct option is A
Given:

Logic: In upper side (First Number)³ + (Second Number)³ = Lower side Number
In 1st Figure:
(3³ + 4³) = 27 + 64 = 91
(3³ + 4³) = 27 + 64 = 91
In 2nd Figure:
(2³ + 5³) = 8 + 125 = 133
(2³ + 5³) = 8 + 125 = 133
Similarly, In 3rd Figure:
(6³ + 1³) = 216 + 1 = 217
? = 217
? = 217
Therefore, the missing number is 217
Thus, the correct option is (a) 217






