Question

which term of ap 3,8,13,.........is78?​

Answer 1

hope you understand my hand writing

Answer 2

Answer:

hey sis❤..

to solve this..it takes more time..

I'll tell u in short..

Step-by-step explanation:

Given a=3

common difference is A2-A1

=8-3

D =5

and An=78

now put this information In formula..

.we should find value of 'n'..

An=a+(n-1)d

78=3+(n-1)5

78-3=(n-1)5

75=(n-1)5

(n-1)=75/5

n-1=15

n=15+1

[n=16...]

therefore my frnd..only 16th term of AP is 78...

hps its help u..

finally I did it..

gud evening❤❤