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JEE MAIN 2026 Crash Course
NEET 2026 Crash Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
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वर्तमान से 10 वर्ष पूर्व पिता की आयु पुत्र की आयु की चार गुनी थी । अब से 10 वर्ष बाद पिता की आयु पुत्र की आयु की दुगुनी रह जाऐगी । उनकी वर्तमान आयु ज्ञात कीजिए । पिता की आयु 80 वर्ष होने के समय , पिता और पुत्र की आयु का अनुपात भी ज्ञात कीजिए ।

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