which numbers replace the question. mark? 23 38 45 64 67 ? please tell me the answer
Answers
Answer:
90
Step-by-step explanation:
Concept= Aptitude
Given= The series
To Find= The Missing Number
Explanation=
We have been asked the question as which numbers replace the question. mark 23 38 45 64 67 ? .
Given series : 23 , 38 , 45 , 64 , 67 , ?
Let us observe the difference pattern here:
38 - 23 = 15
45 - 38 = 7
64 - 45 = 19
67 - 64 = 3
We see that here even and odd numbers are in alternate place. We also observe that when value is subtracted from a even number the difference among them is increasing by 4 as 38 - 23 = 15 and 64 - 45 = 19. Here 38 and 64 are even and the difference between then and their preceding number is increasing by 4 like 15+4=19.
Whereas with the odd numbers the value of difference is depreciating by 4. Like 45-38=7 and 67-64=3.
So now in the digits pattern it is evident that the next number will be even as the series goes alternatively. Since the digit is there , therefore 4 will be added to the last even difference which is 19 making it 19+4=23.
Let the number be x:
x - 67 = 23
x= 23+67
x= 90.
Therefore the number is 90 with which the question mark(?) can be replaced.
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Answer: 90
Given: 23, 38, 45, 64, 67, ?
To Find: The number in the place of the question mark.
Explanation:
This series contains two patterns.
The first number is 23 and the third number is 45.
As a result, the difference between them is 22.
The third and fifth numbers are 45 and 67, respectively.
As a result, the difference between them is 22.
So, the trend for numbers in odd places is the difference between the two numbers is 22.
Now, let's consider the numbers in the even places.
The second and fourth numbers are 38 and 64, respectively. As a result, the difference is 26.
Because there are no numbers in the even places, we must use these two numbers to find the trend.
The difference for the numbers in odd places was 22 and it was constant, so let's assume that the difference here will also be constant, which is 26. As a result, the total will be 90.
As a result, the missing number is 90.
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