babytea
04.07.2021 •
Mathematics
The first and last term of an A. P are 1 and 121 respectively. Find the number of terms in the A.P and the common difference between them if the sum of the term is 1281
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Ответ:
No.of terms=21
Common difference=6
Ответ:
ms Jackson is the only adult so 118-10=108
108 divided by $6 is 18, so 18 students