Question 1: Thinking: Look at the increasing number, it is either addition or square or cube, because the answer base of CD is large, and the cube of 0+ 1 = 1, and the cube of 1+1 = 2,2+1.

Question 2: Grasp the special numbers 63=64- 1, 26=27- 1, so the cube of 63 =4-1, the cube of 26 = 3- 1 = 7. (-2) 3-1 =-9, (-3) 3- 1 =-28, so choose d, but this question feels unreasonable, because the cardinality is 4, 3, 2, 1,-1,-60 respectively.

Question 3: The rule is that the square of the last number minus the previous number equals the third number, that is, the square of 2- 1 = 3, the square of 3-2 = 7 and the square of 46-7 = 2 109 in turn. Choose a.