Answer:
Q1:
The red dot is after the ninth line, and the two numbers are
and
.
This means that the number has to be
Q2:
The red dot is after the third line, and the two numbers are 2 and 3.
This means that the number has to be
Q3:
There seems to be an error with this question, as the red dot is after the seventh position. This means that the number should be at least
but there isn't any option so we will skip this.
Q4:
The red dot is after the second line, and the two numbers are
and
.
This means that the number is
The remaining option will be the answer for Q3.