Average Practice Test 2

Question : 9 of 40

Marks: +1, -0

The arithmetic mean of the numbers 2, 3, 11, 15, 8, 10, 9, 7, 16, and x is 100. Find the value of x.

Solution:

The mean of

({2+ 3 +11+ 15+8 +10+ 9 +7 +16+ x}/10)=10

⇒{81+x}=100

⇒x=19

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