Question 36

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waecmaths question: 

If x is a positive integer, list the values of x which satisfy the equation $3x-4<6$ and $x-1>0$

Option A: 

{1, 2, 3}

Option B: 

{2, 3}

Option C: 

{2, 3, 4}

Option D: 

{2, 3, 4, 5}

waecmaths solution: 

$\begin{align}  & A=\{x:3x-4<6\} \\ & 3x<10 \\ & x<3.333 \\ & A\{x:x=1,2,3\} \\ & B=\{x:x-1>0\} \\ & B=\{x:x>1\} \\ & B=\{x:x=2,3,4,5,-,-,-\} \\ & A\cap B=\{x:x=2,3\} \\\end{align}$

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