The mean weight of 21 students is 21 kg....

The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group, then what is the mean weight of the remaining students ?

20 kg

21 kg

19 kg

22 kg

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The mean weight of 21 students is 21 kg. If a student weighing 21 kg is removed from the group, then I what is the mean weight of the remaining students ?

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PEARSON IIT JEE FOUNDATION-EQUATIONS AND THEIR APPLICATIONS-Level 3

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