Solve the equation $27 x^{2}-10 x+1=0$

If $|{a_k}| < 1,{\lambda _k} \ge 0$ for $k = 1,\,2,….n$ and ${\lambda _1} + {\lambda _2} + … + {\lambda _n} = 1,$ then the value of $|{\lambda _1}{a_1} + {\lambda _2}{a_2} + ….{\lambda _n}{a_n}|$ is

If ${\left( {\frac{{1 – i}}{{1 + i}}} \right)^{100}} = a + ib$, then

The multiplication inverse of a number is the number itself, then its initial value is

If $(x + iy)(p + iq) = ({x^2} + {y^2})i$, then