The sum of the three numbers out of four becomes 180, 194, 206, 215 respectively.
Find the largest number in four.
Answer
85
Solution
Four numbers are set to A, B, C, and D in small order.
The way of choosing which chooses three numbers out of four is four.
From the condition in question, we can find that
A + B + C = 180,
A + B + D = 194,
A + C + D = 206,
B + C + D = 215.
The sum total of four formulas is divided by 3 comes to A + B + C + D = 265.
Therefore, D = (A + B + C + D) - (A + B + C) = 265 - 180 = 85.
Find the largest number in four.
Answer
85
Solution
Four numbers are set to A, B, C, and D in small order.
The way of choosing which chooses three numbers out of four is four.
From the condition in question, we can find that
A + B + C = 180,
A + B + D = 194,
A + C + D = 206,
B + C + D = 215.
The sum total of four formulas is divided by 3 comes to A + B + C + D = 265.
Therefore, D = (A + B + C + D) - (A + B + C) = 265 - 180 = 85.
