Question

Select the letter that can replace the question mark (?) in the following series.
1, 12, 34, 67, ?

1.120
2.90
3. 111
4.100
​

Answer 1

Answer:

3).111

Step-by-step explanation:

1 , 12 difference is 11

12 , 34 difference is 22

34 , 67 difference is 33

67 , X difference is should 44

so that 67+44=111

Answer 2

ans: 111. 1-12=11;34-12=22;67-34=33. so it is 11th table 67+44=111