The average of three numbers 5, 7, and x is 6. What is x?

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Prepare for the GATE General Aptitude and CS Test. Enhance your skills with multiple choice questions and detailed explanations. Elevate your readiness and boost your confidence for the exam!

Multiple Choice

The average of three numbers 5, 7, and x is 6. What is x?

Explanation:
When the average of multiple numbers is given, the total sum equals the average multiplied by how many numbers. Here, with three numbers and an average of 6, the total is 6 × 3 = 18. The known numbers sum to 5 + 7 = 12, so the remaining value must be 18 − 12 = 6. Thus, x is 6, and you can verify: (5 + 7 + 6) / 3 = 18 / 3 = 6.

When the average of multiple numbers is given, the total sum equals the average multiplied by how many numbers. Here, with three numbers and an average of 6, the total is 6 × 3 = 18. The known numbers sum to 5 + 7 = 12, so the remaining value must be 18 − 12 = 6. Thus, x is 6, and you can verify: (5 + 7 + 6) / 3 = 18 / 3 = 6.

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