XAT 2025Quantitative AbilityNumber SystemsMEDIUM+1 / −0.25

Arun selected an integer $x$ between 2 and 40, both inclusive. He noticed that the greatest common divisor of the selected integer $x$ and any other integer between 2 and 40, both inclusive, is 1.
How many different choices for such an $x$ are possible?

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XAT 2025Quantitative AbilityNumber SystemsMEDIUM+1 / −0.25

Select an option to reveal the answer and explanation

Practice the full paper

Attempt XAT 2025 Question Paper with real exam interface and instant grading.

Arun selected an integer xxx between 2 and 40, both inclusive. He noticed that the greatest common divisor of the selected integer xxx and any other integer between 2 and 40, both inclusive, is 1.How many different choices for such an xxx are possible?