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30-11-2022
Mathematics

Answered

the digits 1, 2, 3, 4, 5, 6, 7, and 9 are used to form four two-digit prime numbers, with each digit used exactly once. what is the sum of these four primes? (a) 150 (b) 160 (c) 170 (d) 180 (e) 190

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