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  1. In a school, 391 boys and 323 girls have been divided into the largest possible equal classes, so that each class of boys numbers the same as each class of girls. What is the number of classes ?
    1. 23
    2. 19
    3. 44
    4. 17
Correct Option: D

First of all we find HCF of 391 and 323.

∴ Number of classes = 17



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