(1) से (15) तक की संख्याओं में से (4) संख्याएं चुननी हैं जिनमें ठीक (2) संख्याएं (3) की गुणज हों। कितने चयन संभव हैं?

Choose (4) numbers from (1) to (15) such that exactly (2) numbers are multiples of (3). How many selections are possible?

Explanation opens after your attempt
Correct Answer

B. (450)

Step 1

Concept

There are (5) multiples of (3) and (10) non-multiples. The selection count is \(^{5}C_{2}\times{}^{10}C_{2}=450\).

Step 2

Why this answer is correct

The correct answer is B. (450). There are (5) multiples of (3) and (10) non-multiples. The selection count is \(^{5}C_{2}\times{}^{10}C_{2}=450\).

Step 3

Exam Tip

(3) के (5) गुणज और (10) गैर-गुणज हैं। चयन \(^{5}C_{2}\times{}^{10}C_{2}=450\) होगा।

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Mathematics Answer, Explanation and Revision Hints

(1) से (15) तक की संख्याओं में से (4) संख्याएं चुननी हैं जिनमें ठीक (2) संख्याएं (3) की गुणज हों। कितने चयन संभव हैं? / Choose (4) numbers from (1) to (15) such that exactly (2) numbers are multiples of (3). How many selections are possible?

Correct Answer: B. (450). Explanation: (3) के (5) गुणज और (10) गैर-गुणज हैं। चयन \(^{5}C_{2}\times{}^{10}C_{2}=450\) होगा। / There are (5) multiples of (3) and (10) non-multiples. The selection count is \(^{5}C_{2}\times{}^{10}C_{2}=450\).

Which concept should I revise for this Mathematics MCQ?

There are (5) multiples of (3) and (10) non-multiples. The selection count is \(^{5}C_{2}\times{}^{10}C_{2}=450\).

What exam hint can help solve this Mathematics question?

(3) के (5) गुणज और (10) गैर-गुणज हैं। चयन \(^{5}C_{2}\times{}^{10}C_{2}=450\) होगा।