exam Maths Puzzle Numerical Ability

12 15 18 10
the mean of 13

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exam Other Question

Please help me to solve this problem

Perform operations as indicated

1 - 4i/ 9 + i

Thank You From the edge of the top of a building, a man throws a stone at an angle of 30 degrees with respect to the horizontal and at an initial speed of 20 m/s. If the height of the buildi