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GATE 2021 XH5 – Question 4

General Aptitude · Quantitative Aptitude: Algebra, Geometry and Mensuration · 1 mark · Multiple choice

Here ⊕ means subtraction, ⊗ division, Δ addition and ∇ multiplication. Evaluate Δ2 ⊕3 Δ((4⊗2)∇4).

  1. −1
  2. −0.5
  3. 6
  4. 7

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Correct answer: (D) 7

Explanation

Replace the symbols before applying arithmetic precedence. The expression becomes +2−3+((4÷2)×4). The inner quotient is2, the product8, and2−3+8=7, D. The initial Δ is a unary plus.

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