What is the value of a when $$ {x^{2(3a+1)}}={x^{3}}$$ ?

Arrange 2/3; 4/5; 1/2; 3/4 in descending order :

Find the value of $$ {^3\sqrt{\sqrt{.000064}}}$$.

The value of $$ {\sqrt{x^{2}y}\over{\sqrt{xy^{2}}}}×\sqrt{y\over{x}}$$ is

If 3 added to both the numerator and the denominator, the fraction becomes 10/11 when 4 is subtracted from both the 4 numerator and the denominator of the same fraction, it becomes ¾. What is the value of the fraction?

If the numerator of a fraction is increased by 250% and the denominator is increased by 400%. The resultant fraction is7/19 . What is the original fraction?

What is the value of ½ % in decimals ?

How many positive factors does 325 have?