Question 2

loading...

Prev/Next links

Jambmaths question: 

If X10 = 12145, find X

Option A: 

184

Option B: 

180

Option C: 

124

Option D: 

121

Jamb Maths Solution: 

$\begin{align}  & {{X}_{10}}={{1214}_{5}} \\ & \text{Convert 121}{{\text{4}}_{5}}\text{ to decimal system} \\ & {{1214}_{5}}=1\times {{5}^{3}}+2\times {{5}^{2}}+1\times {{5}^{1}}+4\times {{5}^{0}} \\ & {{1214}_{5}}=125+50+5+4 \\ & {{X}_{10}}={{184}_{10}} \\ & X=184 \\\end{align}$

Jamb Maths Topic: 
Year of Exam: