exam Maths Puzzle Numerical Ability

solve if x E{1,2,3,4,5,6,}

1/2x = x/2

it's on page 42 a chapter test quetion. Thank you

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exam Other Question

abs(5x+9)+6=1 and abs(6c-1)=-2 Your small library of books consists of 6 novels, 5 math books, and 1 biology book. Claculate the number of ways to arrange them on a bookshelf for each of these situations.
a) th