exam Maths Puzzle Numerical Ability

Find the product: (3 - square root sign 5)(3 + square root sign 5)

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exam Other Question
sqrt(2+sqrt(2-sqrt(2+x))) =x



1/(1.2.3.0 +1/(4.5.6)+1/(7.8.9)+..... The quotient when 3 more than a number is divided 3 less than that same number.