If the arcs of same length in two circles subtend angles of 60° and 75° at their centers, then the ratio of their radii is

Questions from KCET 2022

1. For any integer , the remainder obtained when is divided by is

2. It is observed that for some integers and . Then

3. The sum of all the positive divisors of excluding and itself is

4. If then the value of is

5. If the value of a third order determinant is , then the value of the determinant formed by the cofactors will be

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6. is equal to :
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