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ഒൻപത് സംഖ്യകളുടെ ശരാശരി 50 .ആദ്യത്തെ നാല് സംഖ്യകളുടെ ശരാശരി 52 .അവസാനത്തെ നാല് സംഖ്യകളുടെ ശരാശരി 49 .എങ്കിൽ അഞ്ചാമത്തെ സംഖ്യ?

A46

B40

C44

D48

Answer:

A. 46

Read Explanation:

ഒൻപത് സംഖ്യകളുടെ തുക=9 × 5=450 ആദ്യത്തെ നാല് സംഖ്യകളുടെ തുക=52 × 4=208 അവസാന നാല് സംഖ്യകളുടെ തുക=49 × 4=196 അഞ്ചാമത്തെ സംഖ്യ X ആയാൽ 208 + X + 196 = 450 X = 46


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