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দ্বিঘাত সমীকরণ (Part-1)

QUADRATIC EQUATIONS | CLASS-11 | EX-5A | S N De Maths Solutions প্রয়োজনীয় সূত্রাবলি একনজরে [Necessary Formulae at a Glance] : সাধারণ ...

Admin 16 Oct, 2021

Class XI , Quadratic Equations , S N Dey

দ্বিঘাত সমীকরণ (Part -2)

Quadratic Equations | S N De Maths Solutions $\,11.\,\, 9x^2-6x+1\,\,$ রাশির অবম মান হবে- $\,(A)\,\,0 \,\,(B)\,\,1\,\,(C)\,\,2\,\,(D)\,\...

Admin 16 Oct, 2021

Class XI , Combination , S N Dey

Combination | সমবায় | Part-6

Combination | সমবায় | S N De Maths Solution | Part-6 $\,22.\,$ আটটি প্রশ্ন প্রদত্ত এবং প্রত্যেকটি প্রশ্নের একটি করে বিকল্প প্রশ্ন আছে। প্রম...

Admin 15 Oct, 2021

Class XI , Combination , S N Dey

Combination | সমবায় | Part-5

Admin 13 Oct, 2021

Class XI , Combination , S N Dey

Combination | সমবায় | Part-4

Combination | সমবায় | S N De Maths Solution | Part-4 $10(i).~~\,9\,$টি বিভিন্ন ব্যঞ্জনবর্ণ থেকে দুটি ব্যঞ্জন বর্ণ এবং পাঁচটি স্বরবর্ণ থেকে...

Admin 13 Oct, 2021

Class XI , Combination , S N Dey

Combination | সমবায় | Part-3

Combination | সমবায় | S N De Maths Solution | Part-3 $\,6(i).~~~~~{}^{n}C_{r-1}=36, \,\,{}^nC_r=84 ,\\ {}^nC_{r+1}=126$ হলে, $\,n\,$ ও $...

Admin 12 Oct, 2021

Class XI , Combination , S N Dey

Combination | সমবায় | Part-2

Combination | সমবায় | S N De Maths Solution | Part-2 $13.~~~\,2310\,\,$ এর মধ্যে কত বিভিন্ন রকম উৎপাদক আছে? Sol. আমরা জানি, $\,n\,$ সংখ্য...

Admin 12 Oct, 2021

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