2) the no of ways of arranging 7 persons (a,b,c,d among them) in a row so that a,b,c,d are always in the order a-b-c-d (not necessarily together) will be
1) A bag contains unlimited no of balls of four distinct colours such the balls of same colour are indistinguishable. The no of diff ways of slecting 12 balls frm the bag will be
how many negative integer sol exists for x^2-y^2 =400?
If x is a real no then what is the no of solutions for the eq:
the set of all real nos x for which x^2-|x+2|+x >0
Here are few ques...
A speaks truth in 60% cases and B in 70% cases. Wat is the prob that they will do the same thng while describing a single event. If they both lie, they tell the same thing?
A nd B toss coin alternatively till one of them gets a head. If A starts find the prob that B will win the game.
the prob of picking a spade or an ace not of spade from a pack of 52 cards is?