1330.6 9 ? 24 36 A) 15 B) 16 C) 17 D) 18 E) 20

To solve the sequence given (1330.6, 9, ?, 24, 36), we need to analyze the relationship between the numbers.

• The first number (1330.6) isn't directly comparable with the others, so let's focus on the subsequent numbers: 9, ?, 24, and 36.
• The numbers 9, 24, and 36 appear to form a sequence.

If we analyze the differences:

• From 9 to 24, the difference is 24 - 9 = 15.
• From 24 to 36, the difference is 36 - 24 = 12.

Now let's examine if we can find a pattern:

If we let ? = x, we can look at the difference:

• From 9 to x: x - 9
• From x to 24: 24 - x

To form a similar pattern, we can try something like this:

• If we assume the differences decrease by 3, then: From 9 to x, we would get a difference of 15 - 3 = 12. From x to 24, would be a difference of 12 - 3 = 9.

That means:

• x - 9 = 12 => x = 21
• 24 - x = 9 => 24 - x = 9 => x = 15

So we would have:

• 9 to 15 (difference of 6)
• 15 to 24 (difference of 9)

Now looking at the values provided as options: A) 15 B) 16 C) 17 D) 18 E) 20

The only value that fits based on our deductions is A) 15.

So the answer to the question is A) 15.