What is the unit's digit of 213 *212*347*468*778 ?
(a) 4
(b) 8
(c) 6
(d) 2

• its easy...since they have asked the unit digit,just multiply only the unit digit i.e:
  3*2=6
  6*7=42,take only 2;
  2*8=16 take only 6;
  6*8=48 so the unit digits is 8
• 10 years agoHelpfull: Yes(35) No(0)
• A standard procedure for finding unit digits in these types of questions is to divide the numbers by 10 and keep multiplying the remainders to the last viz:
  (213*212*347*468*778)/10 = 3*2*7*8*8/10 = taking any two or three say (3*2*7)and 8*8 again we have 42*64/10=2*4/10 = 8/10 hence ans is 8
• 10 years agoHelpfull: Yes(6) No(1)
• by multiplying all the unit digits , we get the answer as 8
• 10 years agoHelpfull: Yes(1) No(0)
• ans is b-8
• 10 years agoHelpfull: Yes(0) No(0)
• ans=8
  ...
  
• 10 years agoHelpfull: Yes(0) No(0)
• 3*2*7*8*8 = 42*64 = 2688
  last digit = 8
• 10 years agoHelpfull: Yes(0) No(0)
• unit digit of 213=3
  unit digit of 212=2
  unit digit of 347=7
  unit digit of 468=8
  unit digit of 778=8
  now multiply all unit digit and consider only digit of unit place i.e
  3*2=6,6*7=42,2*8=16,6*8=48. ans:8
• 10 years agoHelpfull: Yes(0) No(0)
• 3*2*7*8*8=2688
  unit digit =8
• 10 years agoHelpfull: Yes(0) No(0)
• 8 by multiplying all the given nos unit digits
• 10 years agoHelpfull: Yes(0) No(0)
• 8 last digit is 8
  
• 10 years agoHelpfull: Yes(0) No(0)
• 8
• 10 years agoHelpfull: Yes(0) No(0)
• Multiply all the numbers last digits only.i.e,3*2*7*8*8=last digit is 8
• 6 years agoHelpfull: Yes(0) No(0)