What is the least number than can be added to 4700 to make it a perfect square?
(1) 65
(2) 66
(3) 63
(4) 64
(5) None of these

• 69*69=4761
  Hence 61 should be added
  Therefore the answer would be (5) None of these
• 10 years agoHelpfull: Yes(4) No(0)
• The square of 69 is 4761 and that of 4624..by adding any of these we dont get a perfect square.Rather if we subtract 76 we get a perfect square. So ans is (e)
• 9 years agoHelpfull: Yes(1) No(0)
• 68*68 = 4624 that is less than 4700 . next perfect square is 4761( 4624 < 4700
• 9 years agoHelpfull: Yes(0) No(0)
• do long division of 4700 quotient will come out to be 68. 68^2 is less then 4700
  so 69^2 - 4700 will be our answer
• 8 years agoHelpfull: Yes(0) No(0)
• 5.None of these
• 8 years agoHelpfull: Yes(0) No(0)
• None of these is the answer.
  To find a number whether it is a perfect square or not two rules are used. Rule1: the unit digit should not end with 2,3,7,8. i,e. the last digit. Rule 2: The digit sum or the digit root must be equal to 1, 7, 4, 9. eg: 25=2+5=7 is the digit sum.
  The given options do not satisfy both the rules. Hence the option (5) is the answer.
• 5 years agoHelpfull: Yes(0) No(0)