\(समुच्चय (B={x:x\) is a prime divisor of 84}) का सही सूची रूप कौन-सा है?
\(Which is the correct roster form of the set (B={x:x\) is a prime divisor of 84})?
Explanation opens after your attempt
Correct Answer
A. \(B=\{2,3,7\}\)
Concept
Prime factorize (84): \(84=2^2\cdot3\cdot7\).
Why this answer is correct
The prime divisors are only (2,3,7).
Exam Tip
In roster form, repeated factors or powers are not listed as separate elements. चरण 1: (84) का अभाज्य गुणनखंडन \(84=2^2\cdot3\cdot7\) है। चरण 2: अभाज्य भाजक केवल (2,3,7) हैं। चरण 3: सूची रूप में किसी तत्व को दोहराया नहीं जाता, इसलिए घातों को तत्व न मानें।
Login to save your score, XP, coins and progress.