Justify:
(a) Ifx leaves a remainder of 1 when divided by 5, then x also leaves a remainder of 1 when divided by 5.
(b) If x is an even natural number then x' is also an even number.
(c) If x is an odd number then x is also an odd number.
(d) If x is a negative integer then x is also a negative integer.
(e) If a ends in 4 then a ends in 8.
(f)
If aends in 9 then a ends in 7.
(g) If á ends in 6 then a ends in 6.​