Find the mathematical relationship between m and n for the

Question

1. Assume M and N are two variables in assembly language. Find the mathematical relationship between M and N for the given assembly code. What is the value of N when M is 6?

Func
   MOV RO, #1
   MOV R2, #1

Loop  MUL R2, R2, RO
          ADD RO, #1
          CMP R1, RO
          BHS Loop
          BX LR

Start   LDR RO, =M
           LDR R1, [RO] BL Func
           MOV R3, R2

           SUB R1, R1, #1

           BL Func
           MOV R4, R2
           SUB R3, R3, R4
           LDR RO, =N

           STR R3, [R0]

2. Draw a flow chart to compute the sum of N odd numbers. N is a user input.