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RRB ALP 17th Aug 2018 Shift-1 Question 8

Question 8

Select the number missing from the given number series.
4, 9, 20, 44, ?

Solution

The given Sequence is,: 4, 9,20,44,........

Now look at the pattern that this sequence follows

→First Term = 4

→Second Term = 9= First term + 5

→Third Term = 20 = Second term +11 = Second Term + 5 × 2 +1

→Fourth Term = 44 = Third term + 24 = Third Term +11 × 2 + 2

Fifth Term = Fourth Term + 24 × 2 + 3= 44 +48+3= 95



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