Subject: Maths, asked on 25/11/17

## How is the underlined step coming??

Subject: Maths, asked on 27/10/17

## Plz expain how to solve dis...

Subject: Maths, asked on 27/10/17

## Plz expain how to solve dis...: 23. If S1={2}, S2={3,6}, S3={4,8,16}, S4={5,10,20,40},..... then the sum of numbers in the set S15 is . 1) 5(215)                               2) 16(215-1) 3) 16 (216-1)                         4) 15(515-1)

Subject: Maths, asked on 27/10/17
Subject: Maths, asked on 27/10/17

## Plz explain how to solve dis... Q.19. $\frac{1}{2}\mathrm{tan}\left(\frac{x}{2}\right)+\frac{1}{4}\mathrm{tan}\left(\frac{x}{4}\right)+...+\frac{1}{{2}^{n}}\mathrm{tan}\left(\frac{x}{{2}^{n}}\right)=$

Subject: Maths, asked on 27/10/17

## Plz expain how to solve dis...

Subject: Maths, asked on 27/10/17
Subject: Maths, asked on 27/10/17
Subject: Maths, asked on 27/10/17

## Plz explain how to solve dis... Q.3. $\sum _{k=1}^{n}k{\left(1+\frac{1}{n}\right)}^{k-1}=$

Subject: Maths, asked on 27/10/17

## Plz explain how to solve dis... 1) n (n - 1) 2) n (n + 1) 3) ${n}^{2}$ 4) ${\left(n+1\right)}^{2}$

Subject: Maths, asked on 27/10/17

## Plz expain how to solve dis...

Subject: Maths, asked on 27/10/17

## Plz expain how to solve dis...

Subject: Maths, asked on 26/10/17
Subject: Maths, asked on 26/10/17
Subject: Maths, asked on 26/10/17
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