Math, asked by maniklalmahato5, 10 months ago

isase to bata do please sahi answer aana chahie yah sawal brainliest ke liye hai agar aap sahi mein liest hai to is sawal ka answer aap dhundiye​

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Answers

Answered by Umairhelper
3

Answer:

I think this is the correct answer

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Answered by genius1947
0

\Large\tt{||\:GIVEN\:||} \\

Neela saves in a Mahila Bachat Gat Rs.5 on the first day, Rs.7 on the second day, Rs.9 on the third day and so on.

\Large\tt{||\:TO\:FIND\:||} \\

Neela's saving in the month of August.

\Large\tt{||\:SOLUTION\:||} \\

✇ As per the given data we will get a sequence of the form 5, 7, 9, . . . which forms an arithmetic progession.

Here,

⦾ The first day saving is taken as, a = 5

⦾ Second day saving is taken as, a₁ = 7

⦾ The difference in saving is taken as d

;\implies\:\tt{d\:=\:a_1\:-\:a} \\

;\implies\:\tt{d\:=\:7\:-\:5} \\

;\implies\:\bf{d\:=\:2} \\

Here,

⦾ Here n is the number of days.

We know that,

⦾ There are 31 days in August.

Therefore,

n = 31

✇ So, to calculate the savings in the month of August we have to consider the following formula :

\orange\star\:{\underline{\boxed{\bf{\purple{S_n\:=\:\dfrac{n}{2}\:\Big[2a\:+\:(n\:-\:1)\:d\Big]}}}}}\:\green\star \\

\hookrightarrow\:\tt{S_n\:=\:\dfrac{31}{2}\:\Big[2\times{5}\:+\:(31\:-\:1)\:2\Big]} \\

\hookrightarrow\:\tt{S_n\:=\:\dfrac{31}{2}\:\Big[10\:+\:30\times{2}\Big]} \\

\hookrightarrow\:\tt{S_n\:=\:\dfrac{31}{2}\:[10\:+\:60]} \\

\hookrightarrow\:\tt{S_n\:=\:\dfrac{31}{2}\times{70}} \\

\hookrightarrow\:\tt{S_n\:=\:31\times{35}} \\

\hookrightarrow\:\bf\pink{S_n\:=\:1085} \\

\Large\bf{Therefore,}

The savings in the month of August is Rs.1085.

Answer:

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Explanation:

\huge\mathfrak{Answer:-}

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words which show that you are grateful

Example:-I’d like to express my thanks to all of you for coming here today.

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Hope it helps.

@genius1947 ❤❤

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