\(यदि (T_1={x:x\in \mathbb{N}\) और \(x<10,\ x\) तथा 10-x दोनों अभाज्य हैं\(}), तो (T_1) क्या होगा\)?
\(If (T_1={x:x\in \mathbb{N}\) and \(x<10,\ x\) and 10-x are both prime\(}), what is (T_1)\)?
Explanation opens after your attempt
A. \(T_1={3,5,7}\)
Concept
(x) और (10-x) दोनों अभाज्य होने चाहिए। / Both (x) and (10-x) must be prime.
Why this answer is correct
(x=3,5,7) पर क्रमशः (7,5,3) मिलते हैं, जो अभाज्य हैं। / For (x=3,5,7), the corresponding values (7,5,3) are prime.
Exam Tip
दोहरी शर्त में हर चुने गए मान के साथ दूसरी अभिव्यक्ति भी जाँचें। / In double-condition sets, test the second expression for each candidate.
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