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Geometric Mean

7. If the mea...

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7. If the mean of 5,9,x,7,4 and y is 8, then relation between x and y is

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Q. If the mean of 5, 7, x, 10, 5 and 7 is 7, then x =

(a) 6 (b) 7 (c) 8 (d) 9

Q. If the aithmetic mean of

6

8

5

7

x

4

7

x

Q. If the arithmetic mean of

6, 8, 5, 7, x

4

7,

x

+

-, -

means x, x means

\div

\div

+

48 \times 4 \div 7 + 8 - 2 = ?

X = {8^{n} - 7 n - 1}

Y = {49 n - 49}

n \in N

, then find the relation between

X

Y .

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