If-the-sum-of-4-numbers-is-between-53-and-57-then-the-arithmetic-mean-of-the-numbers-could-be-one-of-the-following-a-11-5-b-12-c-12-5-d-13-e-14-

Question Number 89907 by necxxx last updated on 19/Apr/20

I f t h e s u m o f 4 n u m b e r s i s b e t w e e n

53 a n d 57 t h e n t h e a r i t h m e t i c m e a n o f

t h e n u m b e r s c o u l d b e o n e o f t h e

f o l l o w i n g

a) 1 1 . 5 b) 12 c) 12.5 d) 13 e) 14

Answered by MJS last updated on 19/Apr/20

\bar{x} = \frac{\underset{j = 1}{\sum^{n}} x_{j}}{n}

n = 4; 53 < \underset{j = 1}{\sum^{n}} x_{j} < 57 \Rightarrow \frac{53}{4} < \bar{x} < \frac{57}{4} same as

13.25 < \bar{x} < 14.25 \Rightarrow answer is e) 14

Commented by I want to learn more last updated on 20/Apr/20

Sir, help me check Q 89908 . Is the question possible ? . I just want to know .

Commented by necxxx last updated on 20/Apr/20

{I t}^{'} s c l e a r a n d u n d e r s t a n d a b l e s i r . T h a n k y o u .

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