2 consecutive vertices of a rectangle of area 10 units ^2 are (1,3)&(-2,-1) . other 2 vertices r ?        ans : (-3/5 ,21/5 ) , (-18/5 , 1/5) ; (-2/5 , -11/5) , (13/5 , 9/5)

 

 

d parametric eqn of a line is given by x= -2+r/rt10 ,& y= 1+3r/rt10

den 4 a line   a)intpt on d x-axis =7/3  b)intpt on d y-axis = -7

     c)slope of d line = tan(^-1) 1/3  d) slope of d line = tan^(-1 )3

 

         1 diagonal of a square is d portion of d line 3^1/2x+y=2.3^1/2 interceptedby d axes.then an extremity of other diagonal is ..........?ans(1+3^1/2,1+3^1/2);(1-3^1/2,3^1/2-1)

d total no of words dat can b made by writing d letters of d word PARAMETERso that no 2 vowels r betw 2 consonants is ?   [1800]

 

    in d decimal system of 2 numeration d no of 6 digit nos in which  d sum of digits is divisible by 5 is ?                     [ans 180000]

find d no of ways of giving away 4 similar coins 2  5 boys if each boy can b given any no ( <=4 ) of coins