If Δ stands for the operation of adding the first number to twice the second number, then find the value of (2 Δ 3) Δ 4.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 16
The operation is \(a\,\Delta\,b=a+2b\). The bracket is worked out first.
\(2\,\Delta\,3=2+2\times3=8\)
\(8\,\Delta\,4=8+2\times4=\) 16