Question

Which of the following is not true?
(A) If a, b, c are in AP and a, 2b, c are in GP then a, 4b, c are in HP
(B) The number 361 is not a term of the sequence a_n = n² + 2n+1.
(C) If p,q are the roots of (x-a)(x-b)-m=0, then a, b are roots of (x-p)(x-q)+m=0.
(D) The expression 9^x-3^x+1 can assume all real values for x ∈ R.
Choose the correct answer from the options given below :

• A. (A), (B) and (D) only
• B. (B) and (C) only
• C. (A) and (C) only
• D. (B) and (D) only

Answer 1

The Correct Option is D

The correct answer is(D): (B) and (D) only