MCQ
$\text{Let}\text{ so}=\frac{8}{5}+\frac{16}{65}.....+\frac{128}{2}^{18}+1$:
- A$\text{s}=\frac{1088}{545}$
- B$\text{s}=\frac{1088}{545}$
- C$\text{s}=\frac{1056}{545}$
- D$\text{s}=\frac{545}{1056}$
$\text{s}=\frac{1088}{545}$
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Let S = {x | x is a positive multiple of 3 less than 100} P = {x | x is a prime number less than 20}. Then n(S) + n(P) is.
The value of $\frac{1-\tan^215^\circ}{1+\tan^215^\circ}$ is:
$1$
$\sqrt{3}$
$\frac{\sqrt{3}}{2}$
$2$
Let Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn, then S3n : Sn is equal to:
$\cos9$
$\sin9$
$0$
$1$