Question

The sum of the factors of 25 is :
(a) 7
(b) 6
(c) 31
(d) 26​

Answer 1

The factor of 25 will be 5 but there is no five because you options should have another as e) 5

Answer 2

Step-by-step explanation:

$\Huge{\mathfrak{ Answer }}$

$Aply\:the \:formula$

$Sum\:of\:factors=$

${a}^{p} \times {b}^{q} \times {c}^{r} .......... \\ \\ = \frac{ \: {a}^{p + 1} - 1 : }{a - 1} \times \frac{ \: {b}^{q+ 1} - 1 : }{b - 1} \times......$

$\Huge{\mathfrak{ where\:a, b, c.... \:are\:prime \:factors}}$

= 25

${5}^{2} = \frac{ {5}^{2 + 1} - 1 }{5 - 1} = \frac{125 - 1}{4} = \frac{124}{4} = 31$

hope it helps ✌