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GATE 2021 ME (ME1) – Question 4

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 1 mark · Multiple choice

If “⊕” means “−”, “⊗” means “÷”, “Δ” means “+”, “∇” means “×”, then, the value of the expression $\Delta2\oplus3\Delta((4\otimes2)\nabla4)=$

  1. −1
  2. −0.5
  3. 6
  4. 7

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Correct answer: (D) 7

Explanation

Substitute the prescribed operators, keeping the leading Δ as unary plus. The expression becomes $+2-3+((4/2)\times4)$.

Evaluate parentheses first: 4/2=2 and 2×4=8. The total is $2-3+8=\mathbf7$, **D**.