औसत प्रश्न 14
प्रश्न-
3 के पहले पाँच विषम गुणजों का औसत है
(1) 12
(2) 16
(3) 15
(4) 21
Show Answer
सही उत्तर: (3)
हल: (3)
3 के पहले पाँच विषम गुणजों का औसत $ =\frac{3+9+15+21+27}{5} $ $ =\frac{3(1+3+5+7+9)}{5}=\frac{3\times 25}{5}=15 $
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