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p = 1 + 2 + 3 + ... + 46 = 46(47)/2 = 23(47) = 1081
q = 2 + 4 + 6 +...+72 = 2(1 + 2 + 3 + ... + 36) = 2(36)(37)/2 = 36(37) = 1332
p+q = 1081 + 1332 = 2413
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