Find the missing number?

24
11
30
14

The missing number is 14.

The numbers in the sequence are all multiples of 7, except for 11. 11 is the only number in the sequence that is not a multiple of 7. Therefore, the missing number must be a multiple of 7 that is not 11. The only multiple of 7 that is not 11 and is also in the range of the other numbers in the sequence is 14. Therefore, the missing number is 14.

Here is a table of the numbers in the sequence:

Number | Multiple of 7?
——- | ——–
1 | Yes
2 | Yes
3 | Yes
4 | Yes
5 | Yes
6 | Yes
7 | Yes
8 | Yes
9 | Yes
10 | Yes
11 | No
12 | Yes
13 | Yes
14 | Yes
15 | Yes
16 | Yes
17 | Yes
18 | Yes
19 | Yes
20 | Yes

As you can see, all of the numbers in the sequence are multiples of 7, except for 11. Therefore, the missing number must be a multiple of 7 that is not 11. The only multiple of 7 that is not 11 and is also in the range of the other numbers in the sequence is 14. Therefore, the missing number is 14.

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