Question

Find the 10th term of the AP 3,5,7,9,…….​

Answer 1

Answer:

The 10th term of the AP 3,5,7,9,…….​ is 21.

Step-by-step explanation:

The rules is ,

l = a + (n-1) * d.

where , l = last term ; a = first term ; d = common difference ; n = number of term .

l = 3 + (10-1)*2

or , l = 3 + 18

or , l = 21

The 10th term of the AP 3,5,7,9,…….​ is 21.

#SPJ2

Answer 2

Answer:

the answer is $t_(10) = 21$

Step-by-step explanation:

Given :- AP series is 3 , 5 , 7 , 9 , .......

To find :- value of 10th term .

Solution :-

AP series can be written as :- a , a+d , a+2d , a+3d .........

where , a = first term , d = common difference .

Formula to be used :- $t_n= a + (n-1)d$

for 10th term ,

$n = 10$ , $a=3 , d = 5-3 = 7-5 = 2$

therefore ,

$t_(10)= 3 + (10-1)2 \\t_(10)= 3 + 18 \\t_(10) = 21$

Thus , the answer is $t_(10) = 21$

#SPJ2