ഒരു ക്ലാസ്സിലെ 10 കുട്ടികളുടെ ശരാശരി ഉയരം 125 സെ.മി. ഇതിൽ ഒരു കുട്ടിയെ ഒഴിവാക്കിയപ്പോൾ ശരാശരി ഉയരം 123 സെ.മി. ആയി. ഒഴിവാക്കിയ കുട്ടിയുടെ ഉയരം
A123
B125
C143
D145
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