If the operation ∧ is defined by the equation x ∧ y = 2x + y, what is the value of a in 2 ∧ a = a ∧ 3? · ABC26GN1185

Subject: General Aptitude · Chapter: Simplification · Exam: Campus Recruitment 2009

If the operation ∧ is defined by the equation x ∧ y = 2x + y, what is the value of a in 2 ∧ a = a ∧ 3?

(a)0

(b)– 1

(c)1

(d)4

Answer

Answer (as printed): C

Explanation

2 ∧ a = a ∧ 3 ⇒ 2 × 2 + a = 2 × a + 3 ⇒ 4 + a = 2a + 3 ⇒ a = 1.

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for Simplification