Suppose there are 12 students, among whom are three students, M, E, P (a Math Major, an Engineering Major, and a Physics Major respectively). We
want to send a delegation of four students (chosen from the 12 students) to a
convention. How many ways can this be done so that the delegation includes
exactly two (not more, not less) students from M, E, P?

Bwould be the answer

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.