1.

3.Which term of the A.P. 4, 9, 14, 19, …………………is 79​

Answer»

Step-by-step EXPLANATION:

An= 79

a=4

d=5

An= a+(n-1)d

79= 4+(n-1)5

75=(n-1)5

70=(n-1)

n=70+1

n=71



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