If `a` and `b` are natural numbers such that `(1/a)(1/b)=0.bar3` then the value of `ab` is :

a,b are distinct natural numbers that (1)/(a)+(1)/(b)=(2)/(5). If sqrt(a+b)=k sqrt(2), then the value of k is

If a and b are positive natural numbers a^((1)/(n))xx b^((1)/(n))=(ab)^((1)/(n))

If ab=2a + 3b, a>0, b>0, then the minimum value of ab is

If A and B be two complex numbers such that |1-A'B|^(2)-|A-B|^(2)=K(1-|A|^(2))(1-|B|^(2)) then the value of k is (A)1(B)2(C)(1)/(2)(D)(1)/(3)

Three vector a, b and c are such that abs(a)=1, abs(b)=2, abs(c)=4" and "a+b+c=0 . Then the value of 4a.b+3b.c+3c.a is equal to

The smallest natural number is (a) 0 (b) 1 (c) -1 (d) None of these

The smallest natural number is (a) 0 (b) 1 (c) -1 (d) None of these