1.) If 17,5,4,1 = 80, and 13,9,8,6 = 103, then 15,7,5,9 = ?
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Answer:
The answer is 91.
Step-by-step explanation:
(17×5)-(4+1)= 85-5=80
(13×9)-(8+6)=117-14=103
(15×7)-(5+9)=105-14=91
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