For any parents who struggled with this one....it was tough! the answer is 29/30. The key was to see the pattern: 1/2 + 1/6 = 2/3....2/3 + 1/12 = 3/4.....3/4 + 1/20 = 4/5...and so we see that when we added 1/(4x5) the anser was 4/5 so...when we add 1/(29x30) the answer will 29/30. Super tough problem where a pattern is needed to be seen to get a quick answer.
For any parents who struggled with this one....it was tough! the answer is 29/30.
ReplyDeleteThe key was to see the pattern: 1/2 + 1/6 = 2/3....2/3 + 1/12 = 3/4.....3/4 + 1/20 = 4/5...and so we see that when we added 1/(4x5) the anser was 4/5 so...when we add 1/(29x30) the answer will 29/30. Super tough problem where a pattern is needed to be seen to get a quick answer.