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20 संख्याओ का औसत 55 है । यदि 2 संख्याओ 45 एव 30 को हटा दिया जाए, तो नया औसत ज्ञात करे?A. 65.1B. 65.3C. 56.9D. 56 |
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Answer» Correct Answer - C According to the question Mean of 20 times is =55 Sum of 20 items is = 55 x 20 =1100 Two items removed = 45 + 30 =75 Now, Sum of 18 items = 1100-75=1025 `therefore` Average =`1025/18` =56.9 |
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