Numerical Logic

Detailed solution

8. b. In this series, the letters progress by 2, and the numbers increase by 2.

9. c. The letters decrease by 1; the numbers are multiplied by 2.

10. d. This is a simple addition series; each number is 3 more than the previous number.

11. c. This is a simple subtraction series; Each number is 4 less than the previous number.

12. b. This is an alternating addition and Subtraction series. Roman numbers alternate with Arabic numbers. In the Roman numeral pattern, each number decreases by 1. In the Arabic numeral pattern, each number increases by 1.

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

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