1.

Find least non negative integer r such that 1237"(mod 4)"+985"(mod 4)" -= r"(mod 4)"

Answer»

SOLUTION :1237(MOD 4) +985 (mod 4)
R (mod 4)
` "Now" 1237 -= 1"mod" 4`
`985 -= 1 "mod" 4`
`implies1237("mod" 4) +985("mod" 4)
`=(1+1)"mod" 4`
`=2"mod"4`
`impliesr=2`


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