Math, asked by nistha563, 1 year ago

in A.P. there are 60 terms in which first term is 8 and last term is 185 then find its 31st term

Answers

Answered by CaptainBrainly
30
Hey Mate!
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Here is your answer :
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Given,

First term ( a ) = 8

last term = 185

a + 59d = 185

8 + 59d = 185

59d = 185 - 8

59d = 177

d = 177/59

d = 3

Then,

31st term = a + 30d

= 8 + 30 (3)

= 8 + 90

= 98



HOPE THIS HELPS U...
Answered by ria113
11
Hey !!

Here's your answer.. ⬇⬇


Given :- a = 8
last term = 185

Solution :-
last term = a + ( n - 1 ) d
185 = 8 + ( 60 - 1 ) d
185 = 8 + ( 59 ) d
185 - 8 = 59d
177 = 59d
d = 177/59
d = 3

T31 = a + ( n - 1 ) d
= 8 + ( 31 - 1 ) 3
= 8 + ( 30 ) 3
= 8 + 90
= 98

HOPE IT HELPS..

THANKS ^-^
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