Question

Mohan invested in a national
national saving
scheme.
In the first year, he invested Rs 1000
in the second year Rs 2000 , in the
third year Rs 3 000 and so on. Find
the total amount
he invested in 16 years,​

Answer 1

Answer:

Step-by-step explanation:

Sachin invested in first year = 5000

He invested in second year = 7000

he invested in third year = 9000

And so on

So, sequence becomes : 5000,7000,9000

So, a = first term = 5000

d = common difference = 7000-5000=9000-7000 =2000

Now we are supposed to find find the total amount that he invested in 12 years

So, Formula of sum of n terms in AP =

Now substitute n =12

So total amount he invested in 12 years..