The class mark of the class 130-150 is
a) 130 b) 135
c) 140 d) 145
15. The median of the data arranged in ascending order 8, 9, 12, 18, (x+2), (x+4), 30, 31, 34, 39 is
24. The value of x is
a) 22 b) 21
c) 20 d) 24
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Answer:
c)140
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