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The numbers 4 and 9 have frequencies x and(x - 1) respectively. If their arithmetic mean is 6,then x is equal to :(1) 2 (2) 3 (3) 4 (4) 4 |
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Answer» ANSWER is 2becaus Step-by-step explanation: 4x-4=9x-9 -5x= -10 so x =2 |
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