pls help me in maths question 8 and 9 its urfent for me guys pls help help help
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9) (i) the unit digit of cubes of 77774 = 4
the unit digit of cubes 44447 = 3
the unit digit of cubes 125125125 = 5
(ii) let the three numbers be x, 2x and 3x
ATQ,
x³ + (2x)³ + (3x)³ = 98784
=> x³ + 8x³ + 27x³ = 98784
=> 36x³ = 98784
=> x³ = 2744
=> x = 14
the numbers are = 14, 28 and 42
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