Question

If a=7 d=3 n=8 find 8th term

Answer 1

Answer:

a^n=a+(n-1)d

=7+(8-1)3

=7+(7)(3)

=7+21

=28

Therefore 8th term is 28

Answer 2

$\huge{\fbox{\fbox{\bigstar{\mathfrak{\red{Answer}}}}}}$

$\huge \bullet \large \sf \:( first \: term)a = 7 \\ \huge \bullet \large \sf \:( common \: difference)d = 3 \\ \huge \bullet \large \sf( number \: of \: terms)n \: = 8$

$\bold{\huge{\fbox{\color{blue}{To\: find= a_8}}}}$

$\large\implies{\underline{\sf{\red{a_8\: =\: 7+(8-1)3}}}}$

$\large\implies{\underline{\sf{\red{a_8\:= 7+7(3)}}}}$

$\large\implies{\underline{\sf{\red{a_8\:= 7+21 }}}}$

$\large\implies{\underline{\sf{\green{a_8\:=28}}}}$

$\huge\implies\boxed{\boxed{\underline{\red{\bold{ a_8\: =\: 28\: }}}}}$