The mean of 11 numbers is 7. One of the numbers, 13, is deleted. What is the mean of the remaining 10…
The mean of the remaining numbers is 6.4. The original total is 11 × 7 = 77; removing 13 leaves 64, and 64 ÷ 10 = 6.4.
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The mean of 11 numbers is 7. One of the numbers, 13, is deleted. What is the mean of the remaining 10 numbers?
Answer and explanation
Correct answer B
The mean of the remaining numbers is 6.4. The original total is 11 × 7 = 77; removing 13 leaves 64, and 64 ÷ 10 = 6.4.
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Gujarat SET (GSET)