13 ആളുകളുടെ ശരാശരി ഭാരം 50കി.ഗ്രാം ആണ്, അതിൽ ആദ്യ 7 പേരുടെ ശരാശരി ഭാരം 48 കി.ഗ്രാം അവസാന 7 പേരുടെ ഭാരം 52 കി.ഗ്രാം ഉം ആയാൽ ഏഴാമത്തെ ആളുടെ ഭാരം എത്?
A48 കി.ഗ്രാം
B52 കി.ഗ്രാം
C49 കി.ഗ്രാം
D50 കി.ഗ്രാം
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