The task is to generate the correct answer for a given math problem.

Problem: there are 7 executives , including the ceo and cfo , that are asked to form a small team of 4 members . however , the ceo and cfo may not both be assigned to the team . given this constraint , how many ways are there to form the team ?
25

Problem: a train covers a distance of 100 km in 1 hour . if its speed is decreased by 10 km / hr , the time taken by the car to cover the same distance will be ?
1 hr 6 min

Problem: what is the units digit of ( 147 ^ 17 ) ^ 47 ?

3