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In a 10000 line exchange, 0000 to 2999 is allotted to x group of subscribers, out of which 40% are active during busy hour. The remaining numbers are domestic numbers out of which 20% are active. Each group consists of 100 subscribers. Determine the number of final selectors required.
No. of simultaneous calls for X group = 40 per group.
No. of simultaneous calls for domestic subscriber group = 5 per group
Total number of final selectors needed = (3 x 20) + (7 x 5) = 95.
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