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Mathematics

Answered

A student scores the following marks in 10 tests
3,7,x,7,12,9,10,4,2,5
If the mean mark is 6, calculate the value of x.

Answer :

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x=1
Explanation=

10*6 = 60

3+7+7+12+9+10+4+2+5= 59

60-59=1

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