[" Ber ait- "],[[" 12."x+y,=14],[x-y=4]]

If the equations (2m-1)x+3y-5=0, 3x+(n-1)y-2=0 has Inflnlte num. ber of solutions then n=…………

Point P represents the complex num,ber z=x+iy and point Q the complex num,ber z+ 1/z . Show that if P mioves on the circle |z|=2 then Q oves on the ellipse x^2/25+y^2/9=1/9 . If z is a complex such that |z|=2 show that the locus of z+1/z is an ellipse.

Find the number of numbers of four digits that can be made from the digits 0,1,2,3,4,5 if digits can be repearted in the same num,ber. How many of these numbers have at least one digit repeated?

Babool, ber, and wild date palm, khair, neem are examples of:

Palas and Ber produce a particular type of lac which is known as

A particle starts from rest with uniform acceleration a.Its velocity after "n" seconds is "v" .The displacement of the body in the last two seconds is:

Which one of the following solid exhibits isotrypy ? ( Fe , Cu , Ag ,grap h ite, rub ber )

Which is the befitting statement for the acquired characteristic ? a.It comes into existence due to changes in DNA. b.It is transmitted in the offspring through the parental gametes. c.The organisms are born with these characteristics. d.It develops as a response to the environment.