Question

10th class progressions. find it .​

Answer 1

Answer:

n=5 and an=a5=30

Step-by-step explanation:

so as a5=30

so, tn=a+(n-1)d

so, t5=10+(5-1)d

so, 30-10=4d

so,20/4=d

so,5=d

n is 5 here, and an is a5.