Mathematics, 22.06.2021 05:00 ahmedeldyame

PLEASE HELP ASAP!! Explain how you solve these problems:
7. A seven-digit telephone number has two identical missing digits so that it
reads 276-9?4?. If the seven-digit number is divisible by 6, what is the value of that missing digit?
8. How many different 4 digit numbers can be formed using the digits 2,4,5,6, and 7 such that no
digits repeat and the number is divisible by 4.
9. A and B are 2 non- zero digits for which A468B05 is a number divisible by 11. What is A + B?
10. If the four digit number 57D2 is divisibility by 18, what is D?

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7. A seven-digit telephone number ha...

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