exam Maths Puzzle Numerical Ability

Find a value for n for which the absolute value of -n is not equal to n

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exam Other Question

Four buttons have diameters of 5/8, 3/4, 9/16 and 7/8 inches. Which button is smallest?

a) 9/16 b) 7/8 c) 3/4 d) 5/8

Thank you for your help. The sum of seven consecutive integers is 980. How many of them are prime? Name the prime numbers.