Question

Find Term 20 for the sequence a= 4 6 8 10......​

Answer 1

term 20 in the sequence of a = 42

Answer 2

4,6,8,10 are in A.P

• a=4
• d=2

$\\ \rm\Rrightarrow a_n=a+(n-1)d$

$\\ \rm\Rrightarrow a_20=4+(20-1)2$

$\\ \rm\Rrightarrow a_20=4+19(2)$

$\\ \rm\Rrightarrow a_20=4+38$

$\\ \rm\Rrightarrow a_20=42$