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1 . Which one of the following nunbers can be removed from the set S = {0, 2, 4 ,5 9} without changing the average of set S?

A. 0
B. 2
C. 4
D. 5

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Answer: Option C

Explanation:

he average of the elements in the original set S is: (0 + 2 + 4 + 5 + 9)/5 = 20/5 = 4
If we remove an element that equals the average, then the average of the new set will remain unchanged. The new set after removing 4 is {0, 2, 5, 9}.
The average of the elements is, (0 + 2 + 5 + 9)/4 = 16/4 = 4

সমন্বিত ৭ ব্যাংক ও ১টি আর্থিক | সিনিয়র_অফিসার | 27-11-2021

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