CUET Mathematics 2023 11 Aug Shift 1 PYQs

The set of positive integers less than 50 forming the equivalence class of 6 modulo 9 is given by :

A die is rolled thrice. What is the probability of getting a number greater than 4 in the first and the second throw of dice and a number less than 4 in the third throw?

Evaluate $3^{15} \mod(7)$