If Δ means '+', 
means '-', ∇ means 'x', and o means "÷", what is the value of:'
12 Δ 8 ∇ 3 o 6 5 = ?
Show answer & explanation
Correct answer: D
Explanation
After substitution according to the question:
12 + 8 × 3 ÷ 6 – 5
Solve according to the ‘BODMAS rule’,
12 + 8 × 3 ÷ 6 – 5
= 12 + 8 × 0.5 - 5
= 12 + 4 - 5
= 16 – 5
= 11
Hence, the correct answer is option 4.