what is the remainder when the number 1,2,3,.........44,63 divided by 45?

• 1,2,3,....44
  sum of 44 no.=n*n-1/2=44*45/2=990
  990+63=1053
  1053/45...gives remainder=18.
  
• 10 years agoHelpfull: Yes(15) No(2)
• I think the remainder is 18 because the sum of first 44 terms is 990 so 990+63=1053 and 1053/45 gives remainder 18.
  please tell the correct answer
• 10 years agoHelpfull: Yes(3) No(1)
• 45=9*5
  
  Let N=123456......44
  
  Remainder when N is divided by 5 is 4
  therefore N=5K+4 ....(1)
  
  remainder when N is divided by 9=>990/9=remainder is 0
  therefore N=9L ....(2)
  
  From 1 and 2 we get
  9L=5K+4
  
  For K=1 this condition gets setisfied.
  
  Least possible number satisfies the condition is 9.
  
  Hence general format of N=w(L.C.M of 9 & 5)+least nmber satifies the condition.
  N=w.45+9
  
  So when N gets devided by 45 we gets 9 as remainder.
  
  Ans. is 9
  
  
  
  
  Please correct me if I am wrong...
  
  
• 10 years agoHelpfull: Yes(2) No(6)
• Question May be in complete
• 10 years agoHelpfull: Yes(1) No(0)
• 45=9*5.1,2,3,....44,1053 =9 so divisble by 9 but not by 5 so last 2 digit 53 %5=3
• 10 years agoHelpfull: Yes(0) No(2)
• Ans: 36
  when 45 divides all numbers we get 1161 as remainder(n(n+1)/2)
  
  
• 10 years agoHelpfull: Yes(0) No(2)
• 3..
  n pls let me know d correct ans
• 10 years agoHelpfull: Yes(0) No(2)
• can u explain it clearly gaurav pls
  
• 10 years agoHelpfull: Yes(0) No(2)
• i m still unclear with the question.
• 10 years agoHelpfull: Yes(0) No(0)
• 44*45/2*45 ----> no remainder
  
  63/45 -----> 18 remainder !
• 10 years agoHelpfull: Yes(0) No(0)