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CAT-2007-Previous Years Paper
How many pairs of positive integers m, n satisfy:
Where n is an odd integer less than 60?
Since m is positive, n must be greater than 48. Possible odd values of n such that 48 < n < 60 are 49, 51, 53, 55, 57 and 59 and 49, 51 and 57 give integral values of m. Hence (c).