In G.P. 4, 8, 16, 32, ………… find the sum up to 5th term. - Vidyadip

MCQ

In G.P. 4, 8, 16, 32, ………… find the sum up to 5th term.

A
16
B
64
C
128
D
124

✓

Answer

124

Solution:

In the given G.P.

$=4$ and $\text{r}=\frac{8}{4}=2.$

We know, $\text{s}_\text{n}=a\frac{\text({r}_\text{n}-1)}{\text({r}-1)} $

$\Rightarrow{\text{s}}_5=4\frac{(2^5-1)}{(2-1)}=4\times31=124.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Sequences and Series→Sequences and Series — all question types→MATHS STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

If $\text{f(x)}=\cos(\log\text{x}),$ then value of $\text{f(x)}\text{f(4)}-\frac{1}{2}\Big\{\text{f}\Big(\frac{\text{x}}{4}\Big)+\text{f}(4\text{x})\Big\}$ is:

The length of the transverse axis is the distance between the:

Let A and B be two sets such that n(A) = 16, n(B) = 12, and n(A ∩ B) = 8.Then n(A∪B) equals:

If $\text{f(x)}\frac{\sin(\text{x}+9)}{\cos\text{x}}$ then f(x) at x = 0 is:

If $^\text{k}+5\text{P}_\text{k+1}=\frac{11(\text{k}-3)}{2}.\ ^\text{k+3}\text{P}_\text{k}$, then the values of k are:

7 and 11
6 and 7
2 and 11
2 and 6

The position vectors of the four angular point of a tetrahedron OABC are (0, 0, 0), (0, 0, 2), (0, 4, 0) and (6, 0, 0) respectively. Find the coordinates of cenroid:

If A = {1, 2, 3, 4, 5}, then the number of proper subsets of A is:

$\text{f}(\text{x})=\sqrt{9-\text{x}^2}$. Find the domain of the function:

In the series given below. count the number of 9s, each of which Is not immediately preceded by 5 but is immediately followed by either 2 or 3. How many such 9s are there? 1 9 2 6 5 9 3 8 3 9 3 2 5 9 2 9 3 4 8 2 6 9 8:

A lady gives a dinner party for six guests. The number of ways in which they may be selected from among ten friends if two of the friends will not attend the party together is:

112
140
164
None of these.