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There is a room with one entry one exit and n nunber of cupboards . Every cupboard is numbered from 1 to n. Every staff member is Also numbered from 1 to n. If a staff member enters the room he'll toggle(means if closed then will open else vice cersa) the cupboard if that cupboard number is divisible by his number. Aftr n staff members visit. How many cupboards will be in open state.
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IOS Developer

Interviewed at Tarento

4
Aug 7, 2018

There is a room with one entry one exit and n nunber of cupboards . Every cupboard is numbered from 1 to n. Every staff member is Also numbered from 1 to n. If a staff member enters the room he'll toggle(means if closed then will open else vice cersa) the cupboard if that cupboard number is divisible by his number. Aftr n staff members visit. How many cupboards will be in open state.

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