Question

If 7 is mean of 10,3,4,a,6,9,10. Find the value of a​

Answer 1

a = 7

Explanation:

Given:

7 is mean of 10,3,4,a,6,9,10

To Find:

Value of a

Solve:

Mean →
`((4+10+3+6+9+10+a))/(7)=7`

⇒ 42+a=49

Subtract 42 from both sides

x + 42 - 42 = 49 - 42

Simplify

⇒ a=7

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Answer 2

Explanation:

Mean=((4+10+3+6+9+10+a)/7)=7

=>42+a=49

=>a=7Mean=((4+10+3+6+9+10+a)/7)=7

=>42+a=49

=>a=7