Differential EquationHard
Question
If r, s, t are prime numbers and p, q are the positive integers such that the LCM of p, q is r2t4s2, then the number of ordered pair (p, q) is
Options
A.252
B.254
C.225
D.224
Solution
Required number of ordered pair (p, q) is (2 × 3 - 1) (2 × 5 - 1) (2 × 3 - 1) = 225.
Create a free account to view solution
View Solution FreeMore Differential Equation Questions
The solution of the differential equation, x2. cos - y sin = - 1, where y → 1 as x → ∞ is -...The order and degree of the differential equation are-...The differential equation of all circles in a plane must be...The order and degree of the differential equation are...The solution to the differential equation y ln y + xy′ = 0 where y(1) = e, is -...