(8) अलग-अलग सिक्कों में से कम से कम (1) सिक्का चुनने के कितने तरीके हैं?

In how many ways can at least (1) coin be selected from (8) different coins?

Explanation opens after your attempt
Correct Answer

C. (255)

Step 1

Concept

The ways for at least (1) selection are \(2^8-1=255\). Subtract the empty selection.

Step 2

Why this answer is correct

The correct answer is C. (255). The ways for at least (1) selection are \(2^8-1=255\). Subtract the empty selection.

Step 3

Exam Tip

कम से कम (1) चयन के तरीके \(2^8-1=255\) हैं। खाली चयन को घटाएं।

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Mathematics Answer, Explanation and Revision Hints

(8) अलग-अलग सिक्कों में से कम से कम (1) सिक्का चुनने के कितने तरीके हैं? / In how many ways can at least (1) coin be selected from (8) different coins?

Correct Answer: C. (255). Explanation: कम से कम (1) चयन के तरीके \(2^8-1=255\) हैं। खाली चयन को घटाएं। / The ways for at least (1) selection are \(2^8-1=255\). Subtract the empty selection.

Which concept should I revise for this Mathematics MCQ?

The ways for at least (1) selection are \(2^8-1=255\). Subtract the empty selection.

What exam hint can help solve this Mathematics question?

कम से कम (1) चयन के तरीके \(2^8-1=255\) हैं। खाली चयन को घटाएं।