Which number would fill the empty space in the series; 4, 7, 12, 19, _, 39?
Answers
Answer:
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Step-by-step explanation:
28 is your answer
Because gap is odd no. you can see first 3,5,7,9,11
Therefore the missing term in the series 4, 7, 12, 19, _, 39 is '28'.
Given:
Given series: 4, 7, 12, 19, _, 39
To Find:
The missing term in the series.
Solution:
The given question can be answered very easily as shown below.
Given series: 4, 7, 12, 19, _, 39
Let the missing term be 'x'.
⇒ The difference between the first term and second term = 7 - 4 = 3
⇒ The difference between the second term and third term = 12 - 7 = 5
⇒ The difference between the third term and fourth term = 19 - 12 = 7
The difference between the numbers increases by 2 starting from '3'. Hence the next difference must be '9'.
⇒ The difference between the fourth term and fifth term = x - 19 = 9
⇒ x = 9 + 19 = 28
Therefore the missing term in the series 4, 7, 12, 19, _, 39 is '28'.
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