find the 20th term from the end of the AP: 3,8,13,........253
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an = 253
d= -5
n th term from end= ( an + (n -1)d )
20th term from end = ( 253+ 19*-5)
=( 253-95)
= 158
d= -5
n th term from end= ( an + (n -1)d )
20th term from end = ( 253+ 19*-5)
=( 253-95)
= 158
prassu27:
how u got n-1 =19
n = 20 as 20th term
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