(51)to power 203 , divided by 7 and wt is the reminder

• 51^203...unit digit=1.
  1/7 leaves remainder -6
  i.e.remainder=1
• 10 years agoHelpfull: Yes(5) No(0)
• 51^203/7=(7*7+2)^203/7=2^203/7
  2 powers repeat for every 4 powers..2^1=2..2^2=4..2^3=8..2^4=16..2^5=32..2^6=64..2^7=128..2^8=256
  So 203/4 leaves 3..2^3=8....8/7 leaves remainder 1
• 10 years agoHelpfull: Yes(3) No(1)
• 1/7 leaves remainder -6
  i.e.remainder=1
• 10 years agoHelpfull: Yes(1) No(0)