AP ICET 17 Sep 2021 Shift 1 Paper

Question : 191 of 200

Marks: +1, -0

If the arithmetic mean of

x_{1}, x_{2}, \......., x_{n}

is 51 , then the arithmetic mean of

7 x_{1}-21,7 x_{2}-21,7 x_{3}-21 \...... .7 x_{n}-21

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