Cambridge IGCSE and O Level Additional Mathematics 5 Find how many different four digit numbers greater than 4000 that can be

Question

Cambridge IGCSE and O Level Additional Mathematics 5 Find how many different four digit numbers greater than 4000 that can be formed using the digits 1 2 3 4 5 6 and 7 if no digit can be used more than once 6 Find how many even numbers between 5000 and 6000

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