what is the number that should be subtracted from 682 to make it a perfect square?
a, 2
b, 4
c, 6
d, 8

• The best method to solve this kind of question is using trail and error method to find the nearest perfect square, as the number is close to 700, the square root should be between 20 and 30, further square of 25 is 625, so it should be closer to 25 but after it.
  The square of 26 is 676, so we have to subtract from 682 to get 676. Hence, 6 should be subtracted.
  6 is the answer
  
• 9 years agoHelpfull: Yes(34) No(1)
• not a elitmus level ques,
• 9 years agoHelpfull: Yes(19) No(2)
• short cut ===>>
  20^2=400
  30^2=900
  so no is b/w these -- 25^2=625
  26^2=676 + 6=682 so ans=6
  
• 9 years agoHelpfull: Yes(9) No(2)
• Try to find square root of 682
  2 |6 82| 26
  2 4
  --- ---
  46 2 82
  6 2 76
  ---- ------
  52 6
• 9 years agoHelpfull: Yes(3) No(0)
• Harmitha... are u sure this one is an elitmus question... I really doubt..!!
• 9 years agoHelpfull: Yes(2) No(0)
• its not an elitmus lvl qstion
  
• 8 years agoHelpfull: Yes(2) No(0)
• 676= 26*26 ; so 682-6 =676/// ans c
• 9 years agoHelpfull: Yes(1) No(0)
• using options we have,682-6=676 which is a square of 26.therefore option c is correct.
  
• 9 years agoHelpfull: Yes(1) No(0)
• 6 bcoz nearest square value is 676==(26)^2
  682-676=6
• 9 years agoHelpfull: Yes(1) No(1)
• answer is 6 because when it is subtracted from 682 we get 676 which is square of 26
• 5 years agoHelpfull: Yes(1) No(0)
• 26*26=676
  682-6=676
  so ans is 6
• 9 years agoHelpfull: Yes(0) No(0)
• 6 since 26^2=676
• 9 years agoHelpfull: Yes(0) No(0)
• 6 as 676 is square of 26
• 9 years agoHelpfull: Yes(0) No(0)
• 682-676=6
  
• 9 years agoHelpfull: Yes(0) No(0)
• Total no divisible by 25= 24;
  625*{5, 7, 9, 11}= 4 numbers are more than once divisible.
  Hance only once divisible nos= 24-20= 20.
• 9 years agoHelpfull: Yes(0) No(1)
• 6
  26*26=676
  682-6=676
• 9 years agoHelpfull: Yes(0) No(0)
• 26^2=679
  682-679=6
  ans is 6
  
• 9 years agoHelpfull: Yes(0) No(0)
• 6 bcoz nearest perfect square is 676
  
• 9 years agoHelpfull: Yes(0) No(1)
• 682-6=676 perfect square ie 26^2
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• the unit digit of a perfect squared no can be 4,6,9,5
  so subtracting 6 from 682 we will get 6 as a unit digit number i.e. 676 which is square of 26.
• 8 years agoHelpfull: Yes(0) No(0)
• 682-6=676 is a square no
  
• 8 years agoHelpfull: Yes(0) No(0)
• 676 IS A PERECT SQUARE OF 26.SO ANS WILL BE 6
• 8 years agoHelpfull: Yes(0) No(0)
• let subtract no from given number to make a perfect square
  682-2=680 which is not perfect square
  682-4=678 no perfect square
  682-6=676 which is perfect square of 26....i e,26*26=676
  682-8=674 not perfect square
  so ,answer is c
• 8 years agoHelpfull: Yes(0) No(0)
• ans will be 6
• 8 years agoHelpfull: Yes(0) No(0)
• 26*26= 676, so 689-676 = 6 is the right ans.
• 8 years agoHelpfull: Yes(0) No(0)
• ans is c ie 6
• 8 years agoHelpfull: Yes(0) No(0)
• option-c because if we subtract 6 from 682 we get 676 which is square of 26
• 8 years agoHelpfull: Yes(0) No(0)
• c,6 thenit gives a perfect square
  
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• 26*26=676
  682-676=6
  so the number =6
• 8 years agoHelpfull: Yes(0) No(0)
• if check 676 as perfect sqr rule it satisfies.............ans c
• 8 years agoHelpfull: Yes(0) No(0)
• ans 6 as nearest square is 26*26=676
• 8 years agoHelpfull: Yes(0) No(0)
• Ans: C ) 6
• 8 years agoHelpfull: Yes(0) No(0)
• answer is 6....as it is a perfect square of 26
  
• 8 years agoHelpfull: Yes(0) No(0)
• ans is c,
  682-6=676 which is perfect square of 26
• 8 years agoHelpfull: Yes(0) No(0)
• as nearest sq to 682 is of 26 ie 676 hence 682-676=6 hence 6 should be substracted from the no
• 8 years agoHelpfull: Yes(0) No(0)
• 26 square=686
  so answer is 6
• 8 years agoHelpfull: Yes(0) No(0)
• 6 is the right one
• 8 years agoHelpfull: Yes(0) No(0)
• as we know that 24(square)=576 , 26(square)=676
  so,
  682-676=6 ans.
  option -c
• 8 years agoHelpfull: Yes(0) No(0)
• 6
  26^2=676
  682-682=6
• 7 years agoHelpfull: Yes(0) No(0)
• 682-6=676
  which is the perfect square of 26
• 7 years agoHelpfull: Yes(0) No(0)
• 26*26=676
  682-676=6
• 7 years agoHelpfull: Yes(0) No(0)
• 26*26=676 to make 682 as a perfect square substract 6 from that so answer is 6
• 7 years agoHelpfull: Yes(0) No(0)
• square of 26 =676
  682 - 676 = 6
  answer is option c
• 7 years agoHelpfull: Yes(0) No(0)
• 20^2=400 and 30^2=900 so 682 lies between 20 and 30 and again 25^2=625 c
  26^2=676
  Therefore 6 Answer
• 6 years agoHelpfull: Yes(0) No(0)
• 20^2=400
  25^2=625
  almost nearest value
  26^2=676
  then (682-676)=6
  
  so ans is 6
• 6 years agoHelpfull: Yes(0) No(0)
• c) 6, 682 - 6= 676 which is squre root of 26
• 6 years agoHelpfull: Yes(0) No(0)
• answer is c because 676 is perfect square of 26
• 4 years agoHelpfull: Yes(0) No(0)
• Please be aware guys... This is not an elitmus level question and the questions that come in elitmus are far far more difficult
• 3 years agoHelpfull: Yes(0) No(0)
• 682-6=676
  676 is 26's square
• 1 year agoHelpfull: Yes(0) No(0)
• 26 times 26 equals 676. hence subtract 6 from 682 making it 676 which is a perfect square of 26
• 1 year agoHelpfull: Yes(0) No(0)