there are 18 pupils in the queue if the distance between two pupils is the 80 CM how long is the queue
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Step-by-step explanation:
17 × 80 = 1360
as we didn't count distance between 1 and 18th person
for example - if four persons standing in a line and the distance between them is 2 metre then it will be 3 × 2
hope it help
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