Number Series

Sort Difficulty Level: Entry Level | Moderate | Difficult
The missing fraction in the series given below is:
4/9, 9/20 .......... 39/86
17/40
no
19/42
yes
20/45
no
29/53
no
Show Answer
In the sequence of numbers 5, 8, 13, X, 34, 55, 89, the value of 'X' is.......
20
no
21
no
23
yes
29
no
Show Answer