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· 1 Months ago

The average of 7, 11, 15, x, 14, 21, 25 is 15, then the value of x is :

i. 13.3

ii. 3

iii. 14.5

iv. 12

v. 15.5

vi. 16.7

vii. 18

viii. 19

ix. 26.5

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