Question

Where did the Mahajanapadas actually grow up in ancient India ?

Answer 1

Answer:

Solution.

Here,

a = ₹ 5

d = ₹ 1.75

aₙ = ₹ 20.75

We know that

aₙ = a + ( n – 1 ) d

20.75 = 5 + (n - 1)(1.75)20.75=5+(n−1)(1.75)

(n - 1)(1.75) = 20.75 - 5(n−1)(1.75)=20.75−5

(n - 1)(1.75) = 15.75(n−1)(1.75)=15.75

n - 1 = \frac{15.75}{1.75}n−1=1.7515.75

= \frac{1575}{175} = \frac{315}{35}=1751575=35315

n - 1 = \frac{63}{7}n−1=763

n - 1 = 9n−1=9

n = 10n=10

Hence, the required value of n is 10.