Teaching MPPSC Assistant Professor Mock Test Series 2025 Mathematical Science Algebra Divisibility In Z & Euler Function
Let S = {n : 1 ≤ n ≤ 999; 3|n or 37|n}. How many integers are there in the set Sc = {n : 1 ≤ n ≤ 999; n ∉ S}?
1
639
2
648
3
666
4
990