Question

6 ,10,14,18,22.... is an ap write the value of a and d for it ​

Answer 1

Answer:

$6 ,10,14,18,22... \\ \\ \pink{solution : } \: \: \\ \\ a = 6 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: d = 10 - 6 \\ \: \: \: \: \: \: = 4 \\ \\ \blue{ \large{tn = a + (n - 1)d}} \\ \\ \large{ \green{sn = \frac{n}{2} (2a + (n - 1)d}} \\ \\ \red{ \large{sn = \frac{n}{2}(a + tn)}}$

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Answer 2

$\huge\fbox\blue{Answer}$

6 , 10 , 14 , 18 , 22

a = first term

d = common difference

a = 6

d = a2 - a1

d = 10 - 6

d = 4

To find nth term of an A. P

an = a +(n - 1)d

To find sum of terms

$sn = \frac{n}{2} {2a + (n - 1)d}$

If the first and last terms are given

$sn = \frac{n}{2} {a + an}$