Question

find the least positive integer n such that 1+6+6²+.......+6n>5000



pls give the ans fast pls​

Answer 1

Answer:

n = 5

Step-by-step explanation:

$1 + 6 + 6^2 + ... 6^n$

is sum of Geometric progression series

Sum of  Geometric progression is given by

$a + ar + ar^2 + .. + ar^n = \frac{a (r^{n+1} - 1)}{r - 1}$

here a = 1, r = 6

$\frac{6^{n+1} - 1}{5} > 5000\\ 6^{n+1} > 25001$

put n as 5

$46656 > 25001$

Answer 2

Answer:

answer for the given problem is given