There are 100 bulbs and 100 switches.Each switch is numbered from 1 to 100 and each switch corresponds to each bulb. (a)all switches are switched on. (b)the switch nnumberes which are divisible by 2 are marked and those switches which are on are put off

Question:There are 100 bulbs and 100 switches.Each switch is numbered from 1 to 100 and each switch corresponds to each bulb. (a)all switches are switched on. (b)the switch nnumberes which are divisible by 2 are marked and those switches which are on are put off?

Answer: 10(1,4,9,16,25,36,49,64,81,100)

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