1)нод(24; 76) 2)нод(320; 746). 3)нод(81; 2736). 3)нод(548; 3520).

1) 24 = 2•2•2•3
76 = 2•2•19
НОД(24, 76) = 2•2 = 4
2) 320 = 2•2•2•2•2•2•5
746 = 2•373
НОД(320, 746) = 2
3) 81 = 3•3•3•3
2736 = 2•2•2•2•3•3•19
НОД(81, 2736) = 3•3 = 9
4) 548 = 2•2•137
3520 = 2•2•2•2•2•2•5•11
НОД(548, 3520) = 2•2 = 4