Dr. Johnson is trying to solve a puzzle from an intelligence test. Can you help him?
5+3=28
7+2=59
6+4=210
8+5=313
9+8=117
??+??=222
Dr. Johnson is trying to solve a puzzle from an intelligence test. Can you help him?
5+3=28
7+2=59
6+4=210
8+5=313
9+8=117
??+??=222
Answer:
The pattern is A+B=(A-B)(A+B), so from the last sentence we have A-B=2 and A+B=22.
Therefore, A=12 and B=10, so the last sentence is 12+10=222.
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