Question

find the sum of terms in A.P. : 0.6 + 1.7 + 2.8 + ... to 100 terms
plz answer ASAP

Answer 1

Hii Sehaj,
I'm Mohit ( hope u remembered)

hope it helps

regards
Mohit Khairnar

Answer 2

Answer:

5505

Step-by-step explanation:

AP : 0.6, 1.7, 2.8,....., to 100 terms.

Here, we have ;

First term (a) = 0.6

Number of terms (n) = 100

Difference (d) = 1.7 - 0.6 = 1.1

Sum of n terms is given by formula :

$\bf S_n = \frac{n}{2}[2a +(n-1)d] \\ \\ \bf S_{100} = \frac{100}{2}[2 \times 0.6+(100-1)1.1] \\ \\ \bf S_{100} = 50[1.2 + 99 \times 1.1] \\ \\ \bf S_{100}= 50[1.2+ 108.9] \\ \\ \bf S_{100}= 50 \times 110.1 \\ \\ \red{\boxed{\bf S_{100} =5505}}$

Hence, the sum of the given AP is 5505.