Question

find the 20th term from the last term of the AP 3 8 13 dash dash dash 243​

Answer 1

so A. P is 3,8.13......243

tn = a+(n-1) d

tn= 3+(20-1) 5

= 3+ 19x5

= 3+95

= 98

therefore the 20th term is 98

Answer 2

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