25+36=121;49+49=196;64+49=?
B
Correct answer
Explanation
The logic is (sqrt(a) + sqrt(b))^2. For 25+36: (5+6)^2 = 121. For 49+49: (7+7)^2 = 196. For 64+49: (8+7)^2 = 15^2 = 225. Other options do not fit this pattern of adding the square roots before squaring.