Question 36

loading...

Prev/Next links

Jambmaths question: 

The nth term of two sequences are ${{Q}_{n}}=3\cdot {{2}^{n+2}}$ and ${{U}_{m}}=3\cdot {{2}^{2m-3}}$. Find the product of Q2 and U2

Option A: 

18 

Option B: 

12

Option C: 

6

Option D: 

3

Jamb Maths Solution: 

$\begin{align}  & {{Q}_{n}}=3\cdot {{2}^{n-2}} \\ & {{Q}_{2}}=3\cdot {{2}^{2-2}}=3\cdot 1=3 \\ & {{U}_{n}}=3\cdot {{2}^{2m-3}} \\ & {{U}_{2}}=3\cdot {{2}^{2(2)-3}}=3\cdot 2=6 \\ & {{Q}_{2}}\cdot {{U}_{2}}=3\cdot 6=18 \\\end{align}$

Jamb Maths Topic: 
Year of Exam: