Concept-wise Practice

at-least-special-complement MCQ Questions for Class 11

at-least-special-complement se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

All Tags Search Similar

Practice Questions

1 questions tagged with at-least-special-complement.

Question 1/1 Hard Mathematics Permutations and Combinations Derivations of formulas and their connections Class 11 Level 65

(n) objects में से (r) चुनते समय कम से कम (1) special object हो और special objects (a) हों, तो shortest expression कौन-सा है?

When choosing (r) objects from (n), if at least (1) special object is required and there are (a) special objects, what is the shortest expression?

Explanation opens after your attempt
Correct Answer

B. \(^{n}C_r-{}^{n-a}C_r\)

Step 1

Concept

The complement of at least one special is no special. In exams total minus none is fast for at least conditions.

Step 2

Why this answer is correct

The correct answer is B. \(^{n}C_r-{}^{n-a}C_r\). The complement of at least one special is no special. In exams total minus none is fast for at least conditions.

Step 3

Exam Tip

At least one special का complement no special है। परीक्षा में at least के लिए total minus none तेज होता है।

Open Question Page
Ask Friends

at-least-special-complement Revision Links

All MCQ Tags

Browse concept directory

All Subjects

Subject-wise practice

Search at-least-special-complement

More keyword results