Q. Data sufficiency
Question : i is an integer.Can you find the value of i
Stement 1: i+13 is square number
Statement 2: i+90 is a square number.

Give your answer according to options based on elitmus

• i= -9 will be ri8 ans , as it is given that i is an integer so it can be -ve or +ve number so (-9)+13=4(square of 2) and (-9)+90=81(square of 9).
• 10 years agoHelpfull: Yes(41) No(2)
• didn't you get me bro samjha kar remember 1 thing n^2-(n-1)^2==2n-1.and here i+90-i-13=77 so n =39... now 39^2=1521 and 38^2=1444 .so i==1521-90==1444-13==1431 get it..
• 10 years agoHelpfull: Yes(12) No(19)
• i+13=x^2...(1)
  i+90=y^2...(2)
  i+13+77=y^2
  from eq..1
  x^2+77=y^2
  y^2-x^2=77
  possible values could be
  81-4=77
  means y^2=81, x^2=4
  i+13=4 implies i=-9
  i+90=81 implies i=-9..
  
• 9 years agoHelpfull: Yes(11) No(0)
• Any way, we need two statements
  so answer is 3.
• 10 years agoHelpfull: Yes(6) No(5)
• answer:--1431
  n^2-(n-1)^2==2n-1.and here i+90-i-13=77 so n =39... now 39^2=1521 and 38^2=1444 .so i==1521-90==1444-13==1431..
• 10 years agoHelpfull: Yes(4) No(8)
• actually question was i+18.
  
  Question : i is an integer.Can you find the value of i
  Stement 1: i+18 is square number
  Statement 2: i+90 is a square number.
  
  
• 10 years agoHelpfull: Yes(3) No(0)
• if a)i+18 & b)i+90 thn answr must be neither a neither b
  bcoz multiple values sof i are there. see i=-9 & i=271
• 9 years agoHelpfull: Yes(3) No(0)
• i may be an positive or negative number bcoz it is an intezer so by trail and error we can get -9 as that number because 1)13-9=4 which satisfies 1st statement
  then 2)90-9=81 which satisfies 2nd statement
  so here answer is -
• 10 years agoHelpfull: Yes(1) No(1)
• Bhai ayush nigam , 156+90=256 hota hai kya....????????????????????????????????????????????????
  :))))))))))))
• 8 years agoHelpfull: Yes(1) No(0)
• neither statment (a) nor statement (b) is enough to solve the question.
  as i can be any thing.. hence both statement insufficient
• 8 years agoHelpfull: Yes(1) No(0)
• 2n-1=77...n=78/2=39ans if yes i can explain..
• 10 years agoHelpfull: Yes(0) No(34)
• dubara no mat karna nahi to bhad mai jao..
  
• 10 years agoHelpfull: Yes(0) No(29)
• quetion is i+18 nd i+90 ans is i=271
• 10 years agoHelpfull: Yes(0) No(1)
• take i=1508 ,then also both stat wl b perfect sq
  
• 9 years agoHelpfull: Yes(0) No(1)
• if i + 13 = 169, => i= 156
  now 156 + 90 = 256 i.e. sr of 16 hence i = 156 . ans would be c
• 9 years agoHelpfull: Yes(0) No(0)
• -9 because -9+90=81
  and -9+13=4
  
• 8 years agoHelpfull: Yes(0) No(0)
• i guess -9
• 8 years agoHelpfull: Yes(0) No(0)
• 
  answer is C. value of i is -9.
  both statement are required to give the value of i
• 8 years agoHelpfull: Yes(0) No(0)
• if we take i=3 then
  3+13=16 is a square
  if we take i=31
  then 31+90= 121 is a square
  so statement 1st or 2nd
• 8 years agoHelpfull: Yes(0) No(0)
• If the question is changed .... i+18 & i+90
  then i can take any number of values
  i=-9,31.......
  So,Neither statement is sufficient .
• 8 years agoHelpfull: Yes(0) No(0)