a : b = 2 : 3 ഉം b : c = 1 : 6 ഉം ആയാൽ a : c =
A1 : 2
B2 : 1
C1 : 3
D1 : 9
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ഒരു ക്ലാസ്സിൽ 68 കുട്ടികൾ ഉണ്ട്. ആൺകുട്ടികളും പെൺകുട്ടികളും തമ്മിലുള്ള അംശബന്ധം 6 : 11 ആയാൽ പെൺകുട്ടികളുടെ എണ്ണം എത്ര ?