An X-Mensa dq question

Question

Which of the numbers should fill in the ?.

4, 3, 4, 7, 0, 45, 7, 15, 64, 0, 1111, 55, 5, 5, 0, 20, 32, 1, ?

a) 2

b) 0

c) 20

d) 1

Hints:

1.

There is a reason why the number-sequence tag was omitted.

Where to begin... How can the first 4 numbers be relevant to the seasonal tag?

What are 4 basic math operations?

Answer 1

Step 1:

Taking 0 as the separator of the sequence to get four groups of four numbers each, and concatenating these four numbers into two, we get:
(43, 47), (457, 1564), (111155, 55), (2032, 1?)

Step 2:

We can then place three of the four basic mathematical operators between the complete pairs of numbers to get a seasonal result:
43 × 47 = 2021, 457 + 1564 = 2021, 111155 ÷ 55 = 2021

Step 3:

So ? is equal to 1, as when the remaining mathematical operator is used on the resultant pair of numbers, we get:
2032 - 11 = 2021

Happy New Year!