sequence

The figures I, II and III are parts of a sequence. Which one of the following options comes next in the sequence at IV?

Which one of the given options is a possible value of x in the following sequence? 3, 7, 15, x, 63, 127, 255

Which one of the given options is a possible value of x in the following sequence? 3, 7, 15, x, 63, 127, 255

In general, the CORRECT sequence of surveying operations is

Consider a sequence of numbers $a_1, a_2, a_3, \dots, a_n$ where $a_n = \frac{1}{n} - \frac{1}{n+2}$, for each integer $n > 0$. What is the sum of the first 50 terms?

The following sequence of numbers is arranged in increasing order: 1, x, x, x, y, y, 9,16,18. Given that the mean and median are equal, and are also equal to twice the mode, the va...

Consider a sequence of numbers $${a_1},{a_2},{a_3},....,{a_n}$$ where $${a_n} = {1 \over n} - {1 \over {n + 2}}$$, for each integer n > 0. What is the sum of the first 50 terms?

Limit of the following sequence as $$n \to \infty $$ $$\,\,\,$$ is $$\,\,\,$$ $${x_n} = {n^{{1 \over n}}}$$