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Two persons A and B takes turn in throwing a pair of dice. The first person to through 9 from both dice will be avoided the prize. If A throws first, then the probability that B wins the game is
The number of terms of the A.P. 3, 7, 11, 15,...to be taken so that the sum is 406 is
The pair of lines represented by 3ax2+ 5xy + (a2 - 2) y2 = 0 and at right angles to each other for
If the planes x+2y+Kz=0 and 2x+y-2z=0 are at right angles, then the value of K is
The line (x - 2)/3 = (y - 3)/4 = (z - 4)/5 is parallel to the plane
If - 9 is the root of the equation , then other two roots are
If α,β are the roots of the equation x2 - 2x + 4 = 0 then α5 + β5=
f : R → R is a function defined by f(x) = 10 x − 7. If g = f -1 then g(x) =
If a is real number such that | z − a i | = | z + a i | , then the locus of z is
In ∆ABC, if cotA,cotB,cotC are in A.P., then a2,b2,c2 are in