Question

In an A.P,if a=-10,n=6 and a=10, then the value of d is

Answer 1

Answer:

There can't be two a in an ap

Answer 2

$\purple{\bf {\underline {Given:-}}}$

In an A.P

▪a = 10

▪n = 6

▪$a_{n}$ = 10

$\pink{\bf {\underline{To\:Find:-}}}$

▪The value of d

$\huge\orange{\bf{\underline {Solution:-}}}$

We know that,

$\red{ \star\bold{ \: a_{n} = a + (n - 1)d}}$

$⇒10 = 10 + (6 - 1)d$

$⇒10 = 10 + 5d$

$⇒10 - 10 = 5d$

$⇒5d = 0$

$⇒d = \frac{0}{5}$

$⇒d = 0$

$\bold\green {Hence,\: the\: value\: of \:d \:is \:0}$