Chef and Seven

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## Chef and Number 7 The chef goes to a market to buy a bag of numbers. Where each bag contains numbers between x to y (inclusive) i.e if a bag is said to contain 1 to 10 it means it has [1,2,3,4,5,6,7,8,9,10] numbers in the bag. The chef's lucky number is seven. For choosing a bag, the chef wants to know how many sevens are in the bag. Help the chef count the number of seven in the bag. Note: if

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solution.cppC++17

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