The unit's digit in the product (771 x 659 x 365) is

• 5
  As unit digit of (1*9*5=45) is 5.
• 10 years agoHelpfull: Yes(11) No(9)
• Questio is 7^71 x 6^59 x3 ^65
  answer is 4
• 10 years agoHelpfull: Yes(11) No(9)
• 7^1=unit digit=7
  7^2=unit digit=9(7*7=49)last unit digit
  7^3=unit digit=3(9*7=63)last unit digit
  7^4=unit digit=1(3*7=21)last unit digit
  7^5=unit digit=7(1*7=7)last unit digit
  it repeats for every 4 cycle
  so 71/4=remainder=3 it points 3rd cycle whose unit digit is=3
  in same vise 6^anything will be resultant 6;
  3^1=3
  3^2=9(3*3)
  3^3=7(9*3)
  3^4=1(7*1)
  3^5=3(1*3)
  same like 7^71 term thus remainder is 1
  multiply 3*6*3=24 .
  unit digit is 4
• 9 years agoHelpfull: Yes(11) No(6)
• ans is 4
  As unit digit of (1*9*5=45) =>3 digit
  any number ending with 5 so its unit digit is always ends with 0 and 5 => 0 (a digit)
  so ,unit digit is 4
  
• 10 years agoHelpfull: Yes(6) No(11)
• any number ending with 5 so its unit digit is always ends with 0 and 5
  so unit digit is 5
  
• 10 years agoHelpfull: Yes(4) No(7)
• Unit digit in 3^4 = 1 Unit digit in (3^4)^16 = 1
  
  Unit digit in 3^65 = Unit digit in [ (3^4)^16 x 3 ] = (1 x 3) = 3
  
  Unit digit in 6^59 = 6
  
  Unit digit in 7^4 Unit digit in (7^4)^17 is 1.
  
  Unit digit in 7^71 = Unit digit in [(7^4)^17 x 7^3] = (1 x 3) = 3
  
  Required digit = Unit digit in (3 x 6 x 3) = 4.
• 8 years agoHelpfull: Yes(2) No(0)
• Unit digit in 34 = 1 Unit digit in (34)16 = 1
  
  Unit digit in 365 = Unit digit in [ (34)16 x 3 ] = (1 x 3) = 3
  
  Unit digit in 659 = 6
  
  Unit digit in 74 Unit digit in (74)17 is 1.
  
  Unit digit in 771 = Unit digit in [(74)17 x 73] = (1 x 3) = 3
  
  Required digit = Unit digit in (3 x 6 x 3) = 4.
• 9 years agoHelpfull: Yes(1) No(4)
• 1*9= 9
  9*5= 45 unit digit is 5
  
• 9 years agoHelpfull: Yes(1) No(2)
• those people saying unit digit is 4 u simply multiply it the u get th answer
  771*659=508089 508089*365=185452485
  
  so unit digit is 5.
  
• 8 years agoHelpfull: Yes(0) No(2)
• how is it 4?? please tell.... acc to me its 5, but i cant see 5 in the my options lol(from where i am solving)...
  771 x 659 x 365=185452485.....
• 8 years agoHelpfull: Yes(0) No(2)