Question

Select the number from among the given options that can replace the question mark (?) in the following series.

19, 29, 39, 49, 59, 69, 79, ?

1. 99
2. 119
3. 109
4. 89

Answer 1

Correct Answer - Option 4 : 89

The logic is as follows:

19 + 10 = 29

29 + 10 = 39

39 + 10 = 49

49 + 10 = 59

59 + 10 = 69

69 + 10 = 79

79 + 10 = 89

Hence the missing term is 89.

NOTE:

The question has been rectified as the question was erroneous.