which term
the number
of the A.P 50 40,30,20is the number
-940 ?
Answers
Answered by
24
Answer :
100
Step-by-step explanation:
A.P = 50 , 40 , 30 , .......
a = 50
d = ( - 10 )
tn = ( - 940 )
tn = a + ( n - 1 ) d
- 940 = 50 + ( n - 1 ) ( - 10 )
- 940 = 50 + ( - 10 n + 10 )
- 940 = 50 - 10n + 10
- 940 = 60 - 10n
- 940 - 60 = ( - 10n )
- 1000 = ( - 10n )
n = - 1000
- 10
n = 100
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