Embibe Experts Solutions for Chapter: Numbers and Sequences, Exercise 1: Exercise

If $u_n=\frac{1}{n}-\frac{1}{n+1}$ then, the value of $u_1+u_2+u_3+u_4+u_5$ is

Write the next three terms of following progression.

$2,4,6,8,\dots$

Write the next three terms of following progression.

$2,4,8,16,\dots$

Write the next three terms of following progression.

$4,8,12,16,\dots$

Write the next three terms of following progression.

$5,15,45,135,\dots$

Define infinite sequence and give one example.

Define finite sequence and give one example, also find $a_5$ if $a_n=10n-5$.

Find the average of first $100$ natural numbers.