Question 676577
To solve this problem without a calculator guess a number that, when squared, = 239.  Try 13:  13 * 13 = 169.  That's too small.  14 * 14 = 196.  Too small.  15 * 15 = 225.  And 16*16 = 256.  So the root of 239 (when a number isn't specified, root means square root) is between 15 and 16.

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