Question

Progression is : 5, 8 , 11 ,14.....

what is the 25th term?


what is the sum of the first 25 terms?

Answer 1

i see that 3 is always added...

Answer 2

Using the arithmetic progression formula.

\(\Large \color{Black}{\Rightarrow a_n = a_1 + (n - 1)d }\)

Answer 3

you can calculate manually or use the equation \[\large A_n = A_1 + (n-1)d\]

Answer 4

Here,

\(\Large \color{Black}{\Rightarrow a_{25} = 5 + 3(25 - 1) }\)

Answer 5

77

Answer 6

are you sure about that @payal111 /:)

Answer 7

\(\Large \color{Black}{\Rightarrow 5 + 3(24) }\)

No more hints.

Answer 8

77?

Answer 9

Hmm yes

Answer 10

lol yeah

Answer 11

Thanks :)