I need answers and explanation please!

2. Determine the results in R16 for each bitwise logical operation.

LDI R16,0xF0 LDI R17,0x0F AND R16,R17

LDI R16,0xAA ORI R16,0x99

LDI R16,0xF0 LDI R17,0x33 EOR R16,R17

3. Determine the results in R20 for each set of bit movement instructions.

LDI R20,0x43 LSL R20

LDI R20,0xF7 LSR R20

4. Determine the results (in hex) in R20 for each arithmetic operation

LDI R20,0x43 LDI R21,0x77 ADD R20,R21

LDI R20,10 LDI R21,7 ADD R20,R21

LDI R20,0xAB LDI R21,0x12 SUB R20,R21

5. Determine the run-time for the following block of code. Clock is 16MHz

LDI R20,100

LOOP: LD R15,Z+

ADD R15,R25

ST X+,R15

CPI R20,0

BRNE LOOP:

6. Write the assembly instructions to add the bytes of data in memory address 0x0100 and 0x0180, then store the result in memory address 0x0200.