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Three containers C(1), C(2) and C(3) hav...

Three containers `C_(1), C_(2) and C_(3)` have water at different temperatures. The table below shows the final temperature T when different amounts water (given in liters) are taken from each container and mixed (assume no loss of heat during the process)

The value of `theta` (in `.^(@)C` to the nearest integer) is ------------

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