അഞ്ചു സംഖ്യകളുടെ ശരാശരി 46. അവയിൽ അവസാനത്തെ 4 സംഖ്യകളുടെ ശരാശരി 45 ആയാൽ ആദ്യ സംഖ്യ ഏത്?
A46
B45
C47
D50
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ഒരു സ്ഥാപനത്തിൽ ജോലിചെയ്യുന്ന 5 ആളുകളുടെ പ്രായം 25,27,33,41,54 ആയാൽ അവരുടെ ശരാശരി പ്രായം എത്ര ?