1.

Which of the following is/are correct ?

Answer»

`5 o+_(4) 3 -= 7 ox_(9) 8` (mod 5)
`10 o+_(5) 4 -= 9 ox_(11) 9` (mod 11)
`14 o+_(8) 8 -= 15 ox_(16) 12` (mod 4)
`10 o+_(5) 4 -= 9 ox_(11) 9` (mod 10)

Solution :(i) Use the definitions of ADDITION modulo m and multiplication modulo m.
(ii) SUBSTITUTE the values in theoptions in the given inequations.
(III) The point which satisfies thegiven inequations is the required point.


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