И практических ситуаций для выполнения контрольных работ

Пред-посл. цифра шифра	Последняя цифра шифра
		0	1	2	3	4	5	6	7	8	9
0		1, 50 25	2, 51 24	3, 52 23	4, 53 22	5, 54 21	6, 55 20	7, 56 19	8, 57 18	9, 58 17	10, 59 16
1		11, 70 15	12, 71 14	13, 72 13	14, 73 12	15, 74 11	16, 75 10	17, 76 9	18, 77 8	19, 78 7	20, 79 6
2		21, 60 5	22, 61 4	23, 62 3	24, 63 2	25, 64 1	26, 65 26	27, 66 27	28, 67 28	29, 68 29	30, 69 30
3		31, 80 31	32, 81 32	33, 82 33	34, 83 34	35, 84 35	36, 85 36	37, 86 37	38, 87 38	39, 88 39	40, 89 40
4		41, 90 41	42, 91 42	43, 92 43	44, 93 44	45, 94 47	46, 95 46	47, 96 47	48, 97 48	49, 98 49	50, 99 50
5		51, 20 50	52, 21 49	53, 22 48	54, 23 47	55, 24 46	56, 25 45	57, 26 44	58, 27 43	59, 28 42	60, 29 41
6		61, 1 40	62, 2 39	63, 3 38	64, 4 37	65, 5 36	66, 6 35	67, 7 34	68, 8 33	69, 9 32	70, 10 31
7		71, 11 30	72, 12 29	73, 13 28	74, 14 27	75, 15 26	76, 16 25	77, 17 24	78, 18 23	79, 19 22	80, 20 21
8		81, 30 20	82, 31 19	83, 32 18	84, 33 17	85, 34 16	86, 35 15	87, 36 14	88, 37 13	89, 38 12	90, 39 11
9		91, 40 10	92, 41 9	93, 42 8	94, 43 7	95, 44 6	96, 45 5	97, 46 4	98, 47 3	99, 48 2	100, 49 1