Question

Find the missing term in following series
90,130,180,?,330,440

Answer 1

Given :  90,130,180,?,330,440

To Find :  Missing term

Solution:

90

90  + 40  = 130

130 + 50  = 180      ( 50 = 40 + 10)

180 + 65  = 245      (65 = 50 + 15)

245 + 85  = 330      ( 85 = 65 + 20)

330 +  110 = 440      (110 = 85 + 25)

90      130       180         245           330        440

     40         50         65           85           110

            10          15            20        25

                     5           5            5     -  ( constant  difference )

Missing term  is   245

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Answer 2

Step-by-step explanation:

Find the missing term in following series

90,130,180,?,330,440

Answer is 245