book Maths Puzzle Numerical Ability

The sum of half a number and its recipical is the same as 51 divided by the number. Find the number.

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book Other Question

A salesman packed 3 shirts and 6 ties. With one shirt, he could wear all six ties. With another shirt, he could wear 5 ties. With the 3rd shirt, he could only wear 2 ties. How many different combinations did he have? I came up with 60 ___________
/ 16 4
/ A + B

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