Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Type of Fare | Cash Fare | Day Pass | 31-Day Pass | Monthly Pass |
| --- | --- | --- | --- | --- |
| Fort Irwin-Barstow/Victorville | $12.00 | N/A | N/A | $245.00(MTBP) |
| Mega Pass* | N/A | N/A | N/A | $175.00 |
| Mega Pass* (Senior/Disabled) | N/A | N/A | N/A | $87.50 |
| Fixed Route | $1.25 | $3.50 | $50.00 | N/A |
| Fixed Route Student | $1.00 | $3.25 | $40.00 | N/A |
| Fixed Route Senior/Disabled | $0.60 | $1.75 | $25.00 | N/A |
| General County | $2.25 | $5.50 | $75.00 | N/A |
| Student County | $2.00 | $4.50 | $65.00 | N/A |
Question:
When n/a is the cash fate and n/a is the 31-day pass how many types of fare are there?
Answer:
2.0