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?
how to find the 30th term of this series
In a group of newly married couples, 10% of husbands and 45% of wives are unemployed. What is the probability that a person selected at random is employed?