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150 = 2*3*5^2. Hence, for 150x to be a multiple of 5^2, 3^2, and 2^2, x must contribute a 2 and a 3. Thus, the smallest possible value for x is 2*3 = 6. Answer: B. Posted here: if-5-2-3-2-and-2-2-are-factors-of-150x-what-is-the-429124.html

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How on the exam situation, you can quickly differentiate X as a number that will multiply 150 instead of a single or 2 digit number. Or the question will be more precise on that case

Exactly. If "150x" were a four-digit number, it would have been explicitly mentioned. Without such clarification, "150x" can only represent "150*x", as the multiplication sign (*) is typically omitted.

Hello everyone! Does someone has reminder type excercises?

Remainders Theory REMAINDERS Remainders: Tips and hints Divisibility and Remainders on the GMAT Remainders on the GMAT A Remainders Shortcut for the GMAT All About Negative Remainders on the GMAT A Tricky Question on Negative Remainders Compilation of tips and tricks to deal with remainders Cyclicity and the remainders on the GMAT GMAT Question Patterns: Remainders Questions Units digits, exponents, remainders problems DS Questions PS Questions For other subjects: ALL YOU NEED FOR QUANT ! ! ! Ultimate GMAT Quantitative Megathread

Is there any short method to this question? Thanks!

Only lcm method may be helpful if think its a shortcut

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