Find the a20 for 3 8 13 18 for this sequence

The twentieth term of the sequence is 98.

Step-by-step explanation:

The given sequence is 3, 8 , 13, 18 , ...

Any given sequence is said to be in Arithmetic Progression, if the difference between any two consecutive terms is always same.

Now here :

Second term - First term = 8 - 3 = 5

and Third term -  Second term = 13 - 8 = 5

since the difference (d) = 5 is same in both cases, the given sequence is an AP.

Now, general term of an AP is

Here, n = 20 and d =5 and a = 3

So,   = 3 + 19(5) =  98

So, the twentieth term of the sequence is 98.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column