solve this math solution question......................
Attachments:
Answers
Answered by
14
Step-by-step explanation:
mark as Brittlent and take thanks for all question
Attachments:
Answered by
1
a = 5
d = 6
n = 20
Sn = n/2 ( 2a + (n-1)d )
= 20/2 ( 2*5 + (20-1) 6 )
= 10 ( 10 + 19*6 )
= 10 ( 10 + 114 )
= 10 * 124
= 1240
Therefore, the 20th term of the given AP is 1240 :)
d = 6
n = 20
Sn = n/2 ( 2a + (n-1)d )
= 20/2 ( 2*5 + (20-1) 6 )
= 10 ( 10 + 19*6 )
= 10 ( 10 + 114 )
= 10 * 124
= 1240
Therefore, the 20th term of the given AP is 1240 :)
Similar questions