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The meaning of every third bulb flashes means that you have to add 3 to get the count of the next bulb. Since the first one to flash is #1, the next ones are #4, #7, #2, #5, #8, #3, #6. By now all eight bulbs flashed once; thus, the last one to flash is #6.BTGmoderatorLU wrote:Source: Official Guide
Eight light bulbs numbered 1 through 8 are arranged in a circle as shown above. The bulbs are wired so that every third bulb, counting in a clockwise direction, flashes until all bulbs have flashed once. If the bulb numbered 1 flashes first, which numbered bulb will flash last?
A. 2
B. 3
C. 4
D. 6
E. 7
The OA is D
So the bulbs will flash in the following order:BTGmoderatorLU wrote:Source: Official Guide
Eight light bulbs numbered 1 through 8 are arranged in a circle as shown above. The bulbs are wired so that every third bulb, counting in a clockwise direction, flashes until all bulbs have flashed once. If the bulb numbered 1 flashes first, which numbered bulb will flash last?
A. 2
B. 3
C. 4
D. 6
E. 7
The OA is D
