Question

Q.How many terms of AP -10, -7, -4,-1,.....must be added to get the sum -104.
Q. A number is a two-digitnumber, which is three times more than 4 times the sum of the
digits. If 18 is added to the number, the digits gets opposite. Represent geometrically. Q.Reshma wanted to save at least 3 6,500 for sending her daughter to school next year (after
12 months). She saved 450 in the first month and raised her saving by 20 every next
month. How much will she be able to save in next 12 months? Will she be able to send her
daughter to the school next year? What value is reflected in this question?​

Answer 1

i hope this will help u .

Answer 2

Answer:

a=-10

d=3

sn=-104

sn=n/2(2a+(n-1)d)