Search Class 10 Questions

1 result found for "expert-mcq" in Class 10.

Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

यदि (n) सबसे छोटा धनात्मक पूर्णांक है जिससे \(\frac{n}{2^2\cdot 3^4\cdot 5\cdot 13}\) का दशमलव सांत हो, तो (n) क्या होगा?

If (n) is the smallest positive integer for which \(\frac{n}{2^2\cdot 3^4\cdot 5\cdot 13}\) has a terminating decimal, what is (n)?

Explanation opens after your attempt
Correct Answer

C. (1053)

Step 1

Concept

For a terminating decimal, \(3^4\) and (13) must cancel completely, so \(n=3^4\cdot 13=1053\). For the least value, cancel only the unwanted prime factors.

Step 2

Why this answer is correct

The correct answer is C. (1053). For a terminating decimal, \(3^4\) and (13) must cancel completely, so \(n=3^4\cdot 13=1053\). For the least value, cancel only the unwanted prime factors.

Step 3

Exam Tip

सांत दशमलव के लिए \(3^4\) और (13) पूरी तरह कटने चाहिए, इसलिए \(n=3^4\cdot 13=1053\)। न्यूनतम मान में केवल अनचाहे अभाज्य गुणनखंड काटें।

Open Question Page
Ask Friends
Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.