Question

There are four unknown numbers, the mean of the first Two numbers is 4 and the mean of first three

is 9 ‘the mean of all four numbers is 15.If one of the four number is 2 ,find the other numbers (please explain in method by method)​

Answer 1

Step-by-step explanation:

a = 2 ; b = 6 ; c = 35 ; d = 43

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