0.29
0.75
0.86
0.93
Correct answer is C
Let the number = d.
\(\log d = \bar{1}.8732\)
\(\log \sqrt{d} = \frac{\bar{1}.8732}{2}\)
= \(\frac{\bar{2} + 1.8732}{2}\)
= \(\bar{1}.9366\)
\(\therefore \sqrt{d} = Antilog (\bar{1}.9366)\)
= 0.86
Given that \(log_4 x = -3\), find x.
\(\frac{1}{81}\)
\(\frac{1}{64}\)
64
81
Correct answer is B
\(\log_4 x = -3\)
\(x = 4^{-3}\)
= \(\frac{1}{64}\)
45 years
72 years
108 years
216 years
Correct answer is C
Given that the ages are in the ratio 3: 4: 5.
Let the sum of their ages be t.
\(\therefore\) The youngest age = \(\frac{3}{12} t\)
The eldest age = \(\frac{5}{12} t\)
\(\implies \frac{5}{12} t - \frac{3}{12} t = 18\)
\(\frac{2t}{12} = 18 \implies t = \frac{18 \times 12}{2}\)
t = 108 years.
The sum of their ages = 108 years.
If \(104_x = 68\), find the value of x
5
7
8
9
Correct answer is C
\(104_x = 68\\
1 \times x^2 + 0 \times x + 4 \times x^0 = 68\\
x^2 = 68 - 4; x^2 = 64\\
x = \sqrt{64}=8\)
Which of the following numbers is perfect cube?
350
504
950
1728
Correct answer is D
No explanation has been provided for this answer.