3i-Infotech
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Numerical Ability
Time and Work
Q. There are 100 bulbs connected to 100 switches
• 1 to 100 all the switches are put ON.
• Only even numbers of switches are used ie, ON means OFF and viceversa
• Similarly odd numbers of switches are done
• Switch number which is divisible by 3 are done similarly
• Switch number which are divisible by 4 are done similarly
This process is done upto 100 divisibles.
When do all the bulbs are in ON and OFF condition?
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3i-Infotech Other Question
Q. Andy, Brian, Cedric, Dave are architects ,barber, case worker and dentist but not in the order.
*Architect will have the letter ‘r’ in his name.
*Atleast one of the person should have coincidence in the first letter of their name and their occupation but not all [eg: andy-architect]
* Barber and dentist share their name by only one letter
What is the occupation of each person?
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