Question

Find the 20th term from the last term of the AP 3,8,13,-___--255​

Answer 1

Answer:

a=3 d=5

20 th term =a+(n-1)d

=3+(19)5

=3+95

= 98

Step-by-step explanation:

hope this will help you

Answer 2

Answer:

$160$

Step-by-step explanation:

$ap \: \: \: \: 3 \: \: \: \: \: \: \: 8 \: \: \: \: \: \: \: \: 13 \: \: .... \: \: \: \: \: \: \: 250 \: \: \: \: \: \: \: \: \: \: \: 255 \\ \\ from \: the \: last \: \: \: \: a = 255 \\ \\ d = 250 - 255 = - 5 \\ \\ \\ \\ \\ therefore \: \: from \: the \: last \: \: \: \: 20th \: term \: = a + 19d \\ \\ = 255 + 19( - 5) \\ \\ = 255 - 95 \\ \\ = 160$