What is the cardinal number for the follwing sets?

1). 101,102,103,104,....121

2). (1,2) (101,102) (0,105)

To find the cardinal number of a set, we need to count the number of elements in the set.

1) For the set {101, 102, 103, 104, ..., 121}, we can see that the numbers are listed consecutively from 101 to 121.

To find the number of elements, we subtract the first number from the last number and add 1:
121 - 101 + 1 = 21

So, the cardinal number of this set is 21.

2) For the set {(1, 2), (101, 102), (0, 105)}, it looks like each element in the set is an ordered pair.

To find the cardinal number, we need to count the number of ordered pairs in the set. We count each pair, so let's count:

(1, 2), (101, 102), (0, 105)

We have three ordered pairs, so the cardinal number of this set is 3.

Therefore, the cardinal numbers for the given sets are:
1) 21
2) 3