How many positive integer multiples of 1001 can be expressed in the form 10^{j}-10^{i}, where i and j are integers and 0 \leq i<j \leq 99 ?
How many positive integer multiples of 1001 can be expressed in the form 10^{j}-10^{i}, where i and j are integers and 0 \leq i<j \leq 99 ?