Question

which tearm of the ap : 3 , 8 , 13 , 18 _____ is 78

ko e hai yaha pay ​

Answer 1

Answer:

The given sequence is 3, 8, 13, 18, ....78.

'a' = 3, 'd' = 5, last term = 78, 'n' = ?

tn =a+(n−1)d

⟹78=3+(n−1)5

⟹78=3+5n−5

⟹78=5n−2

⟹5n=80orn=16.

The 16th term is 78.

mai hu ( ꈍᴗꈍ)