Question

a) Write next line.
2
4 6 8
10 12 14 16 18
.....
How many nos are there in 10th row. find 1st and last term of 10th row​

Answer 1

Step-by-step explanation:

The A.P is 2,4,6,8,10,12,14,16,18.....

Here a=2 , d=t2-t1=4-2=2 , t10=?

Therefore, tn = a + (n-1) d

t10 = 2 + (10-1) 2

t10 = 2 + 9 × 2

t10 = 2 + 18

t10 = 20

Thus, first term of an A.P is 2 & Last term of an A.P is 20.

If you like my answer then like, comment and vote

Always Stay Positive and Stay Happy