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The mean of five observations is $15$. If the mean of first three observations is $14$ and that of the last three observations is $17$, then the third observation is
- (a)$20$
- (b)$19$
- (c)$18$
- (d)$17$
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(C) $18$
The mean of five observations is 15 . If the mean of first three observations is 14 and that of the last three…
CBSE Class 10 Maths PYQ · Statistics · Mean of Ungrouped Data · 1 Mark · March 2024 · Standard
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