There are 35 street lamps in a row on a national highway. all are lit except one. The faulty lamp is 15th from the right end. What is the position of the family lamp from the left end?
Given:
Total lamps= 35
Position of faulty lamp from right= 15
Formula used:
Total lamp = Position of faulty lamp from right + Position of faulty from left -1
35 = 15 + L -1
35 = 14 + L
L = 21
Hence, position of faulty lamp from left is 21.
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