1.

Which of the following is/are correct ?A. `5 o+_(2) 4 -= 17 ox_(5) 3` (mod 7)B. `6 o+_(4) 7 -= 19 ox_(9) 3` (mod 3)C. `9 o+_(7) 3 -= 8 ox_(7) 9` (mod 9)D. `5 o+_(2) 4 -= 17 ox_(5) 3` (mod 5)

Answer» Correct Answer - A
`5 o+_(2) 4 -= 17 ox_(5) 3` (mod 7) 1 = 1 (mod 7)
`:.` 1-1 is divisible by 7 (true).


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