Mathematics, 21.02.2021 07:20 ricardodeleon152

Mean of four numbers a ,b, c, and d is 8 and mean of seven numbers x , y ,z ,a, b, c and d is 12 . Find the mean of x, y and z.

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Mean of four numbers a ,b, c, and d is 8 and mean of seven numbers x , y ,z ,a, b, c and d is 12 ....

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