exam Maths Puzzle Numerical Ability

The difference between two numbers is 18. 5 times the larger number is 2 times the smaller number. Find the two numbers.

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exam Other Question

What number is next in this series? 10, 4, 3, 11, 15 . . .

I chose 14 because 10-4=6; 4-3=1; 3-11=8; 11-15=4; 15-14=1. The series appeared to me to be even, odd, even, even, odd. Is 14 the correct answer? -5x(x + 2y - 7)