there should be six..........
This question cannot be answered because there is no context.
I question why you don't just search the answers of already answered questions.
18
Two points (which must lie on a line) and the third point NOT on that line.
Both ends of the line must join together, as in a circle, loop, or a closed figure.
What must be true? In your example, we have 4 intersecting lines. g and b are parallel, and f and h are parallel. g and b are perpendicular to f and h. It might look like tic-tac toe for example
If it is a straight line it must be in the same plane. Otherwise not necessarily.
33 marbles must be in the sixth line
There must be 67 marbles.
36
33
36
The pattern is 3, 4, 6, 10, 18, 34...So your answer is 34
20
22 marbles are in the fifth line.
If the pattern below following the rule starting with 10 every consecutive line has a number 1 less than the previous line how many marbles must be in the seventh line?
The fifth line will have 19 marbles. 4 5 7 11 19
17
I'm coming up with 63. <------Answer is completely wrong! The actual answer is: 1. Just minus one every time you go down a row.