Which of the following number never comes in the end of a perfect number?
a)1
b)000
c)2
d)6

• c) 2
  hit and trial method
• 14 years agoHelpfull: Yes(10) No(4)
• For a perfect square always end no. comes are 1,0,6,9,4,5..so 2 never comes
• 12 years agoHelpfull: Yes(5) No(1)
• by hit and trial method
  6*6=36
  like that ....so 2 never comes at the end of a perfect no.
• 13 years agoHelpfull: Yes(4) No(3)
• b)
  as let assume 28...itz a perfect no...
  28=1+2+4+7+14 (sum of its factorials,except the number itself.)
  so i think 000 will b the answer.....
• 13 years agoHelpfull: Yes(1) No(3)
• (a)1 odd perfect no. is not yet discoverd
• 14 years agoHelpfull: Yes(0) No(12)
• if we consider a single digit no. then all the four options here are is in the end digit.
  now 6 is perfect no. as 1+2+3=6
  1 is also perfect as 1=1
  I have seen that 2 hasn't come in a long range and also 000 so, not sure between these two
• 13 years agoHelpfull: Yes(0) No(0)
• 6
  it 'll b a even no..
• 13 years agoHelpfull: Yes(0) No(3)
• a)1
  
  coz a perfect number is derived from the formula 2^(p-1)*((2^p)-1) ...where p must be a prime number...and it is for sure that product of (even & odd) is always even that can never end with 1.
• 13 years agoHelpfull: Yes(0) No(2)
• A perfect square number can never ends with digit 2,3,7 and 8.......So remember this rule to solve this type of questions........and save your time....
• 9 years agoHelpfull: Yes(0) No(0)
• answer:2
  
  perfect square numbers never ends with :2,3,7,8
• 9 years agoHelpfull: Yes(0) No(0)