1).The number of ways in which 12 students can be equally divided into three groups ?(combination chapter question and the answer is 5775 is given)
2).A committee of 3 ladies and 4 gents is to be formed out of 8 ladies and 7 gents.Mrs.x refuses to serve in a committee in which Mr.y is a member.The number of such committee is ?(combination chapter answer is 1540 is given )
3).The supreme court has given a 6 to 3 decision upholding a lower court;the number of ways it can give a majority decision reversing the lower court is ?(combination chapter answer is given 256 )
4).The total number of ways in which six 't' and four '-'signs can be arranged in a line such that no two '-'signs occur together is ?(permutation chapter answer is given 35 in book )
help me if u know the solution :)