? What is the correct representation of sulphide ion?
(a) SO
(C) SO}
(b) 32-
(d) 53-
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Answer:
Thus, the required mean = 2058.
Ex 3.1 Class 7 Maths Question 8.
The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:
Day Rainfall (in mm)
Monday 0.0
Tuesday 12.2
Wednesday 2.1
Thursday 0.0
Friday 20.5
Saturday 5.5
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