N 3 n 7 July 8, 2019 16 32 64 128 N 3 )( n 7 )= 0 N n 3 )= 70 3 n 7 n 2 is divisible by 8 N 3 4 n 7 N 3 n 2 7 3 n 2 n 7n N 7 )+ 3 n 1 )+ 90 7 n 3 n is divisible by 4 31 n 3 n 7 N 3 n 2 7n 10 N 3 n 2 7 2 36n
