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2. there are 8 people travelling in a lift. their weights are

jack, jill, jerry, jim, joy, jolly, john

75kg, 53kg ,70kg ,64kg, 72kg, 59kg ,71kg ,58kg

find the mean . if the limit is 600 kg, are these people within the capacity of the lift?

• * * * 3.the ages in years of 10 teachers of a school in uae are:

• 32, 41, 28, 54, 35, 26, 23, x, 38, 40 and mean of their age is 35.

• (i) find the value of x.

• (ii) what is the age of the oldest teacher and that of the youngest teacher?

• * * *4. find the mean of the given data