Question

3. If a = 5, d = 3, an = 50, then the value of n is
a) 13
b) 14
c) 15
d) 16​

Answer 1

Answer:

an=50

a=5(given)

an=5×n=50

n=50/5=10

hope this helps!

Answer 2

Answer:

an = 50 , a = 5 , d= 3 .

an = a +(n-1)d.

50= 5+(n-1)3

50-5= (n-1)3

45 = (n-1)3

45/3 = (n-1)

15 =(n-1)

n = 15+1 = 16

N = 16

HENCE,PROVED..