Question
Download Solution PDFनिम्नलिखित समीकरण को सही बनाने के लिए किन दो चिन्हों को आपस में बदला जाना चाहिए?
21 + 5 × 2 – 21 ÷ 3 = 12
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया समीकरण: 21 + 5 × 2 – 21 ÷ 3 = 12
1) + और -
चिन्हों को बदलने के बाद
बाएं हाथ की ओर = 21 - 5 × 2 + 21 ÷ 3 = 21 – 10 + 7 = 18 ≠ दाहिने हाथ की ओर
2) – और ÷
चिन्हों को बदलने के बाद
बाएं हाथ की ओर = 21 + 5 × 2 ÷ 21 – 3 = 21 + 0.476 – 3 = 18. 476 ≠ दाहिने हाथ की ओर
3) – और ×
चिन्हों को बदलने के बाद
बाएं हाथ की ओर = 21 + 5 - 2 × 21 ÷ 3 = 21 + 5 – 14 = 12 = दाहिने हाथ की ओर
4) × और ÷
चिन्हों को बदलने के बाद
बाएं हाथ की ओर = 21 + 2.5 – 63 = - 39.5 ≠ दाहिने हाथ की ओर
इसलिए, "- और ×" सही उत्तर है।Last updated on Jun 12, 2025
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