List of top Mathematics Questions on Binomial Expansion asked in Karnataka PGCET

Which of the following is/are true?
• [(i)] $(a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3$
• [(ii)] $(a + b + c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ca$
• [(iii)] $(x + a)(x + b) = x^2 + (a + b)x + ab$