Add them together and divide by two.
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-- Add the two numbers. -- Divide their sum by 2 . -- The quotient is the mean of the two numbers.
Add the two numbers and divide by two, or find the number which is halfway between the two numbers.
The mean times three will be the total of all three numbers. Multiply the mean times three and subtract the sum of the two numbers from that total.
If you mean two consecutive odd numbers then they are 117 and 119
Multiply the two numbers together and take their square root.