find the unit digit of number 25^6251 +36^528 +73^54..plz solve it by 4n+1 rule...

• 25^6251=5^6251=5(bcoz unit digit of 5 is always 5)
  36^528=6^528=6(bcoz unit digit of 6 is always 6)
  73^54=3^54=9(unit digit of 3^54=3^2(54/4=2 remainder)=9)
  now add all the unit digit 5+6+9=20=0
  
• 11 years agoHelpfull: Yes(20) No(6)
• last digit of 25^n is 5, last digit of 36^n is 6, and last digit of 73^54 is 9. add 5,6and 9=20. so last digit 0.
• 11 years agoHelpfull: Yes(8) No(8)
• 0..will be the answer.
• 11 years agoHelpfull: Yes(0) No(3)