1)A sphere fall from a height 16 m . If e = 7/9, then sphere will finish rebounding in how much time??
2)*******got answer of q 2***so removing it*******
3)find the coefficient of term independent of x in expansion of
(1 + x + 2x2)(3x2/2 - x/3)9 ?
4) probability that when 12 balls are distributed among 3 boxes , the first will contain 3 balls is????
ans. given : 12C5.29/312 plz xplain..
5) Find d no. of ways of selecting 2 white squares on a normal chess board,so that they don't lie on same row or column??
answer given : 400
6)Find the no. of real solution of the eq. logex = IxI ??
7)The no. of words of 6 letters that can be formed with letters of the word
ABRAKADABRA if the words begin and end with A??
answer given : 270 but me getting 370..