Question

Suppose that the division x divided by 5 leaves a remainder 4 and the division x divided by 2 leaves a remainder 1. Find the ones digit of x

Answer 1

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Answer 2

Divided by remainder

5. (-1) 4

2 (-1) 1

L.C.M. of 5 and 2=10

Hence,x=10-(difference between divisor and remainder)

=10-1

=9

Therefore,smallest value of 'x'=9

Therefore,digit at unit place of 'x'=9