How to solve these kind of questions effectively ????I always make blunders in theses...so plzz help...........experts are requested t o help ASAP [1]
Eg.
there are two sets A={a1,a2,a3......,an} and B={b1,b2,b3,.....,bm}
whats the no. of ways to choose elements so that it
a)is increasing fn
b)is decreasing fn
e)has real roots,im roots
f)has every mapping divisible by some no.
g)related to die,cards etc.
h)periodic ,oscillatory
i)determinant formed by mapping is non zero
g)is invertible
h)has mapping which joined to form a straight lines are perependicular,parallel,intersecting
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UP 0 DOWN 0 2 0
