1. A student was asked to find the average of
12 numbers and 3, 11, 7, 9, 15, 13, 8, 19, 17,
21, 14 and x. He got 12 as average. What is
the value of x ?
(a) 13
(6) 17
(c) 7
(d) 31
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SDDAF
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