Find the missing number in each sequence.
5, ____ , 10, 12 1/2
A) 7
B) 7 1/2
C) 8
D) 8 1/2
To find the missing number in the sequence, we need to look for a pattern or rule that governs the relationship between consecutive numbers.
In this case, let's examine the differences between each consecutive pair of numbers:
- The difference between 5 and the missing number is unknown.
- The difference between the missing number and 10 is also unknown.
- The difference between 10 and 12 1/2 is 2 1/2.
From this information, we can infer that the pattern or rule of the sequence involves adding 2 1/2 to each consecutive number. If we add 2 1/2 to 5, we get 7 1/2. Therefore, the missing number in the sequence is 7 1/2.
So, the correct answer is B) 7 1/2.