The unit digit in the expression (36 ^234 * 33 512 * 39^ 180) - (54 ^ 29 * 25 ^123 *31^ 512) ?

• Ans : 6
  Explain :-
  unit digit 'll be.....
  6*1*1 - 4*5*1
  
  (4*5*1 = 20, ignore 2 because i have to only focus on unit digit)
  so, 6 - 0 = 6
• 9 years agoHelpfull: Yes(22) No(1)
• 6*2*1 unit digit 2
  4*5*1 unit digit 0
  2-0= 2 ans
• 9 years agoHelpfull: Yes(3) No(3)
• ANSWER==> 2
  
  (6*2*1)-(4*5*1) = 2-0=2
• 9 years agoHelpfull: Yes(2) No(5)
• its 6
  
  (6*6*1)- (4*5*1)= 6
• 9 years agoHelpfull: Yes(1) No(1)
• ans:6
  explanation
  unit digit of 1st part will be....
  6*1*1
  2nd part will be....
  4*5*1=20 so unit digit is 0
  1st part has 6 unit digit so 1st part-2nd part=6-0=6 will be the unit digit
• 9 years agoHelpfull: Yes(1) No(0)