Find the missing number.
11:17::19:?
A) 29
B) 27
C) 21
D) 23

To find the missing number in the analogy 11:17::19:?, we first need to identify the relationship between the numbers in the first pair.

Analyzing the First Pair

The numbers 11 and 17 have a difference of 6:

• 17 - 11 = 6

Applying the Same Logic

Now, we apply this difference to the second number, 19:

• 19 + 6 = 25

Finding the Closest Option

Since 25 is not one of the answer choices, let's check the options provided:

• A) 29
• B) 27
• C) 21
• D) 23

Identifying the Correct Answer

Looking at the options, we notice that the closest number to 25 is:

Thus, the answer is 23.