Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers
Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers is an online chapter test in the Bihar Board Class 8 pattern, covering A Story of Numbers. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| A Story of Numbers | 30 |
Difficulty: 8 medium · 22 hard
A Story of Numbers MCQ questions with answers
The first 3 of 30 questions. Unlock the series for the rest, each with a solution.
Q1. Match each number system with the base it uses: (a) Babylonian (b) Mayan (c) Egyptian (i) $60$ (ii) $10$ (iii) $20$ The correct matching is
प्रत्येक अंक प्रणाली को उसके द्वारा प्रयुक्त आधार से मिलाइए: (a) बेबीलोनियन (b) माया (c) मिस्री (i) $60$ (ii) $10$ (iii) $20$ सही मिलान है
- A. a–i, b–ii, c–iii
- B. a–iii, b–i, c–ii
- C. a–ii, b–iii, c–i
- D. a–i, b–iii, c–ii
Solution
The Babylonian system uses base $60$, the Mayan system uses base $20$, and the Egyptian system uses base $10$.
बेबीलोनियन प्रणाली आधार $60$ का प्रयोग करती है, माया प्रणाली आधार $20$ का प्रयोग करती है, और मिस्री प्रणाली आधार $10$ का प्रयोग करती है।
Q2. In the number $50\,505$, the place value of the leftmost $5$ is how many times the place value of the rightmost $5$?
संख्या $50\,505$ में, सबसे बाईं ओर के $5$ का स्थानीय मान सबसे दाईं ओर के $5$ के स्थानीय मान का कितने गुना है?
- A. $100000$
- B. $10000$
- C. $100$
- D. $1000$
Solution
The leftmost $5$ is in the ten-thousands place $(50000)$ and the rightmost $5$ is in the ones place $(5)$, so $50000\div 5 = 10000$ times.
सबसे बाईं ओर का $5$ दस-हज़ार के स्थान $(50000)$ पर है और सबसे दाईं ओर का $5$ इकाई स्थान $(5)$ पर है, इसलिए $50000\div 5 = 10000$ गुना।
Q3. Assertion (A): A place-value number system needs a symbol for zero. Reason (R): Zero marks an empty place so that the other digits keep their correct values. Choose the correct option.
अभिकथन (A): एक स्थानीय-मान अंक प्रणाली को शून्य के लिए एक प्रतीक की आवश्यकता होती है। कारण (R): शून्य एक खाली स्थान को दर्शाता है ताकि अन्य अंक अपने सही मान बनाए रखें। सही विकल्प चुनिए।
- A. Both A and R are true, and R is the correct explanation of A / A और R दोनों सही हैं, और R, A की सही व्याख्या है
- B. A is true but R is false / A सही है परंतु R गलत है
- C. Both A and R are true, but R is not the correct explanation of A / A और R दोनों सही हैं, परंतु R, A की सही व्याख्या नहीं है
- D. A is false but R is true / A गलत है परंतु R सही है
Solution
Both statements are true, and R explains exactly why A is needed: without zero to hold an empty place, digits would shift and lose their value.
दोनों कथन सही हैं, और R ठीक यही समझाता है कि A की आवश्यकता क्यों है: खाली स्थान को रोकने के लिए शून्य के बिना, अंक खिसक जाएँगे और अपना मान खो देंगे।
Frequently asked questions
How many questions are in the Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers?
30 questions for 30 marks, to be answered in 20 minutes.
Is there negative marking in the Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers?
No — wrong answers are not penalised in this test.
Which topics does the Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers cover?
A Story of Numbers (30 questions).
Is the Bihar Board Class 8 Mathematics · Ch 3: A Story of Numbers free?
It is part of the BSEB Class 8 Test Series 2027 — Chapter-wise + Full Tests (35 tests, ₹99). You can first try English · Ch 1: I Wonder for free.
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