Question

MULTIPLE CORRECT QUESTION

Answer 1

Considering the equation \(\large \bf \frac{2}{x}+\frac{5}{y}=\frac{1}{3}\),\(\large \bf ~where~x,y \in N\).
The number of solution of the equation is :-
A) 6,if both x and y are even
B) ,if both x and y are odd
C) 0,if x is even whereas y is odd
D) 0,if x is odd whereas y is even

Answer 2

either a or b

Answer 3

\[6y + 15x = xy\]\[\Rightarrow xy - 15x - 6y = 0\]\[\Rightarrow xy - 15x - 6y + 90= 90\]\[\Rightarrow x(y-15) - 6(y-15) = 90\]\[\Rightarrow (x-6)(y-15)=90\]

Answer 4

then

Answer 5

Now factorise \(90\) and see the solutions.

Answer 6

\[\large \bf (x-6)(y-15)=2 \times 3^2 \times 5\]

Answer 7

If x-6=2 i.e even
then x=8,
y-15=45

Answer 8

Yup, that's how you solve it.

Answer 9

thank you parth :)

Answer 10

np

Answer 11

lol