A boy asks his father what is age of grandfather then father replied "he is x years old in x^2 years" and also told " we are talking about 20th century". Which year is the of birth of grand father?

• x years in x^2 year, 20th century
  x=44 that year is 1936
  so his yr of birth is 1936-44 = 1892
• 11 years agoHelpfull: Yes(34) No(4)
• between 2000 & 2100,
  45^2=2025 is only a perfect square year(44^2=1936,46^2=2116)
  so grandfather's age is 45 years in 2025
  so year of birth=2025-45=1980
• 11 years agoHelpfull: Yes(27) No(39)
• 20th century means between 1900 to 2000
  44^2=1936 is only perfect square in that period
  so yr of birth of grand father=1936-44=1892
• 11 years agoHelpfull: Yes(14) No(1)
• He is x years old in x^2 years
  Find the square root of 2000 that is 44.72
  Then,
  44 years in 1936, which is 44^2
  Grandfather was born 1936 - 44 = 1892
• 11 years agoHelpfull: Yes(5) No(0)
• very simple
  20th century means 1900 to 2000
  grandfather is x yrs old in x^2 yrs
  it means the number has to be perfect square b/w 1900 to 2000
  which is 44 yrs i.e. in year 1936.
  so birth is 1936-44 = 1892
• 10 years agoHelpfull: Yes(1) No(1)
• x years old in x^2 years, 20th century
  so his age is 45 in the year of 45^2 = 2025
  so his yr of birth is 2025-45 = 1980
• 11 years agoHelpfull: Yes(0) No(3)
• 45^2=2025 ,,so,,45 is the answer
  bcoz 44^2 and 46^2 is not in the range of 2000 and 2100 (20th century)..!!
• 11 years agoHelpfull: Yes(0) No(3)
• 44
  44^2=1936.
• 11 years agoHelpfull: Yes(0) No(0)
• 20th century means 1900 to 2000...so 44^2=1936 and 1936-44=1892
  
• 11 years agoHelpfull: Yes(0) No(0)
• can any tell me y we hav to take 44 there????
• 11 years agoHelpfull: Yes(0) No(0)
• @TEJA: bcoz after 2000 21st century starts.....
• 10 years agoHelpfull: Yes(0) No(0)