5
7
8
9
Correct answer is C
\(104_x = 68\\
1 \times x^2 + 0 \times x + 4 \times x^0 = 68\\
x^2 = 68 - 4; x^2 = 64\\
x = \sqrt{64}=8\)
The first term of a G.P is 7. Find its 4th term, if its common ratio is 3. ...
If X = {n\(^2\) + 1:n = 0,2,3} and Y = {n+1:n=2,3,5}, find X∩Y. ...
The angle of a sector of a circle of radius 3.4 cm is 115°. Find the area of the sector. \((Tak...
The ages of Tunde and Ola are in the ratio 1:2. If the ratio of Ola's age to Musa's age is 4...
Which of the following lines is not parallel to the line 3y + 2x + 7 = 0? ...
Simplify \((\frac{1}{\sqrt{5} + \sqrt{3}} - \frac{1}{\sqrt{5} - \sqrt{3}}) \times \frac{1}...
Given that logx 64 = 3, evaluate x log\(_2\)8...
In a regular polygon of n sides, each interior angle is 144°. Find n ...
Find the sum to infinity of the following sequence \(1, \frac{9}{10}, (\frac{9}{10})^{2}, ...