find the difference between the following pair of conescutive squares: (a)25{2} -24{2}9
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(i) 49 is the square of 7. Therefore it is the sum of 7 odd numbers. 49 = 1 + 3 + 5 + 7 + 9 + 11 + 13
(ii) 121 is the square of 11. Therefore it is the sum of 11 odd numbers 121 = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21
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