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in the magic figure below, the sum of numbers in each row ,column and diagonal are the same. wht is the value of y+z

v -5 w
31 x y
49 z 13

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TCS Other Question

A bag has 1,3,5,7,9,11 and 13 cm sticks .find the probablity that they they will form a triangle if 3 sticks are drawn? Find the ratio of in circle and corcumcircle of an equilateral triangle