Răspuns :
(2n - 1)+( 2n + 1 ) = 264
4n = 264
n = 66
2n - 1 = 2 x 66 - 1= 131
2n + 1 = 133
verificm
131 + 133 = 264
4n = 264
n = 66
2n - 1 = 2 x 66 - 1= 131
2n + 1 = 133
verificm
131 + 133 = 264