Question

18 25 4 16 20 3 6 15 x

Answer 1

Ответ:

x=3

Пошаговое объяснение:

18 25 4

16 20 3

6 15 x

18-16=2       2*3=6

25-20=5      5*3=15

4-3=1           1*3=3

Answer 2

It seems like you have a sequence of numbers, and you're trying to find the missing number represented by "x." To solve this, we need to figure out the pattern or rule that governs the sequence. Without more information or context, it's challenging to determine the exact pattern, but I'll try to provide some possible patterns and solutions:

1. Ascending Squares: If we consider the sequence as a series of ascending squares, then it could be: 1^2, 2^2, 3^2, 4^2, 5^2, 6^2, 7^2, 8^2, x^2.

   • 1^2 = 1
   • 2^2 = 4
   • 3^2 = 9
   • 4^2 = 16
   • 5^2 = 25
   • 6^2 = 36
   • 7^2 = 49
   • 8^2 = 64 So, x^2 = 81, which means x = 9.

2. Fibonacci Sequence: If we consider the sequence as a variation of the Fibonacci sequence, then it could be: 1, 1, 2, 3, 5, 8, 13, 21, x. In this case, x would be the sum of the two preceding numbers, which is 34.

3. Arithmetic Progression: If we consider the sequence as an arithmetic progression, then it could be: 14, 11, 8, 5, 2, -1, -4, -7, x. In this case, the common difference is -3, so x would be -7 - 3 = -10.

4. Geometric Sequence: If we consider the sequence as a geometric sequence, then it could be: 18, 25, 4, 16, 20, 3, 6, 15, x. In this case, the common ratio is not evident, so it's difficult to determine the value of x without additional information.

To determine the correct answer, you would need more context or information about the pattern or rule governing this sequence. Please provide any additional details you have, and I can try to give a more accurate solution.