Question

If 3 x 4 = 25, 5 x 6 = 61, 6 x 7 = 85, then 9 x 10?

• A. 109
• B. 910
• C. 181
• D. 190

Answer 1

Answer:

C. 181

3 x 4 = 25 = 3² +4² = 25 5 x 6 = 61=5² + 6² = 61 6 x 7 = 85= 6² + 7² = 85 Similarly 9 x 10 = 9²+10² = 181