Question 23

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Jambmaths question: 

The binary operation $*$ is defined on the set of integers p and q by $p*q=pq+p+q,$find $2*(3*4)$

Option A: 

59

Option B: 

19

Option C: 

67

Option D: 

38

Jamb Maths Solution: 

$\begin{align}  & p*q=pq+p+q, \\ & 3*4=3\times 4+3+4=19 \\ & 2*(3*4)=2*19 \\ & =2\times 19+2+19 \\ & =59 \end{align}$

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