Logarithm and A...

$$\log_2 {64}$$ is equal to____

Simplify: $$(-1)^{19}+(-1)^{20}+(2)^5$$

If $$t = -2$$ then $$log_4 \dfrac{t^2}{4}-2 \, log_4 \, 4t^4 \, =$$

The logarithm of $$0.0625$$ to the base $$2$$ is:

If mantissa of logarithm of 719.3 to the base 10 is 0.8569 , then mantissa of logarithm  of 71.93 is

The value of $${\log _b}a.{\log _c}b.{\log _a}c$$  is 

If $$2y = log(12-5x-3x^2)$$ takes all real values then $$x$$ belongs to 

If $$a=\log_35 $$ and $$b= \log_725$$ then correct option is:

$$\dfrac{8^{-1}\times 5^3}{2^{-4}\times 625}=$$

Solve for x:
$$ \log(x+3)+\log(x-3)=\log 16$$