The HCF of two numbers is 18 and their LCM is 810. If one of the numbers is 90, what is the other number?

A 162

B 180

C 270

D 405

Solution

Correct Answer: Option C

*সঠিক উত্তর: c) 270
-যদি একটি সংখ্যা 90 হয়,
তবে অন্যটি হবে (810 × 18) ÷ 90 = 270।

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