Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If p/q is in simplest form and q = 2^8 × 5^11, what is the maximum number of decimal places in the terminating decimal?

Answer and explanation

Correct answer: 11

The governing concept is that a denominator of the form 2^m × 5^n produces a terminating decimal with at most max(m,n) decimal places. Here q = 2⁸ × 5¹¹. The powers must be balanced to create a power of 10. Multiply by 2³: 2⁸ × 5¹¹ × 2³ = 2¹¹ × 5¹¹ = 10¹¹. Consequently, the fraction can be written with denominator 10¹¹ and has at most eleven digits after the decimal point. The maximum occurs when the numerator causes no cancellation that shortens the result. Thus option B is correct. Option A ignores the larger exponent, option C adds exponents unnecessarily, and option D multiplies them without mathematical basis.

Related tags

Decimal RepresentationTerminating DecimalExponentsDecimal RepresentationNumber SystemsMathematicsClass 9 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.