book Maths Puzzle Numerical Ability

Evaluate:

0 2 3
0 1 0
1 5 7

(these numbers are inside of an absolute value sign)

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book Other Question

5 is what percent of 20?
12 is what percent of 24?
what percent of 35 is 7?
20 out of 60 is what percent?
SOlve for x

2 / x+1 plus 1 = 9 / x+1

Thank you for your help