Question : Direction: In this question, some equations are solved on the basis of a certain system. Find out the four alternatives for the unsolved equation on that basis.
If 879 = 8, 625 = 1, 586 = 9, then 785 = ?
Option 1: 6
Option 2: 7
Option 3: 8
Option 4: 9
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Correct Answer: 6
Solution : Given:
879 = 8, 625 = 1, 586 = 9, 785 = ?
Like, 879 ⇒ (7 + 9) – 8 = 16 – 8 = 8.
625 ⇒ (2 + 5) – 6 = 1.
586 ⇒ (8 + 6) – 5 = 9.
Similarly, 785 ⇒ (8 + 5) – 7 = 6.
Hence, the first option is correct.
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