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Fittoniya [83]
3 years ago
6

4. Which term of the AP:3, 8, 13, 18,...,is 78?​

Mathematics
1 answer:
givi [52]3 years ago
6 0

Step-by-step explanation:

The first term of the AP (a) = 3

and common difference (d) = 8-3= 5

therefore, a+(n-1)d = 78

=> 3+(n-1)5= 78

=> n-1=75/5

=> n-1 = 15

=> n= 16

16th term of the AP is 78

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