Find the number to replace the question mark in the series given below. 35, 25, 49, 35, 63, 45, ? , 55


HP SkillRack on 17-Mar-2016 10:44

Find the number to replace the question mark in the series given below.

35, 25, 49, 35, 63, 45, ? , 55
on 17-Mar-2016 11:46

77
on 17-Mar-2016 14:56

77
on 17-Mar-2016 15:39

77
on 17-Mar-2016 17:06

11*7=77
on 17-Mar-2016 17:25

77
on 18-Mar-2016 00:01

81
on 18-Mar-2016 14:32

77
on 18-Mar-2016 15:45

7*11=77
on 18-Mar-2016 17:15

77
on 18-Mar-2016 23:31

77
on 19-Mar-2016 12:44

77 first two nos difference is -10 second two pairs difference is -14.......hence...the last pair difference must be -22.... therefore the answer is 77
on 20-Mar-2016 12:56

77 SECOND two number pair difference is 14.hence:63+14=77
on 20-Mar-2016 16:45

77
Solution:


35, 25, 49, 35, 63, 45, ? , 55

Odd position numbers are like 35,49,63,77,91 ... with a difference of 14.
Even position numbers are like 25,35,45,55,.. with a difference of 10.

Hence ?=63+14 = 77.