alleryযদি একটি সংখ্যা a-এর 2/5 অংশ অপর একটি সংখ্যা b-এর 1/3 অংশের সমান হয়, তবে a : b হলো
A3 : 5
B2 : 3
C5 : 6
D6 : 5
Answer & Solution
Correct answer: C. 5 : 6
2a/5 = b/3 থেকে পাওয়া যায় a/b = (1/3)(5/2) = 5/6।
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