Question

Kishor and rupees 12500 in the first five month and rupees 21004 in the remaining 7 month find the average monthly income during the year ​

Answer 1

Step-by-step explanation:

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Question 1

Prove that

\sf \dashrightarrow \dfrac{1}{1 + \sqrt{2}} + \dfrac{1}{\sqrt{2} + \sqrt{3}} + \dfrac{1}{\sqrt{3} + \sqrt{4}} + {\dots\dots\dots} \ + \dfrac{1}{\sqrt{8} + \sqrt{9}}⇢

1+

2

1

+

2

+

3

1

+

3

+

4

1

+……… +

8

+

9

1

Question 2

‎‎Prove that

\sf \dashrightarrow \ \dfrac{3 + 2\sqrt{2}}{2 - \sqrt{2}} - \dfrac{3 - 2\sqrt{2}}{2 + \sqrt{2}} = a + b\sqrt{2}⇢

2−

2

3+2

2

−

2+

2

3−2

2

=a+b

2

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