Expert Mathematics Chapter 1: Real Numbers Class 10 Level 2

यदि (a=20q+13) और (b=20p+18), तो (ab+a) को 20 से भाग देने पर शेषफल क्या होगा?

If (a=20q+13) and (b=20p+18), what is the remainder when (ab+a) is divided by 20?

Explanation opens after your attempt
Correct Answer

B. 7

Step 1

Concept

The remainders of (a) and (b) are 13 and 18.

Step 2

Why this answer is correct

The remainder of (ab+a) comes from \(13\times18+13=247\).

Step 3

Exam Tip

\(247=20\times12+7\), so the final remainder is 7. चरण 1: (a) और (b) के शेषफल 13 और 18 हैं। चरण 2: (ab+a) का शेषफल \(13\times18+13=247\) से मिलेगा। चरण 3: \(247=20\times12+7\), इसलिए अंतिम शेषफल 7 है।

FAQs

Mathematics Question FAQs

What is the correct answer to this Mathematics MCQ?

The correct answer is B. 7.

Where can I practice more Mathematics questions?

Open the subject page or level quiz links on this page to practice more active Mathematics MCQs with answers and explanations.

Related Mathematics Questions

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.