`(-1)^(15)` = _____________

Additional Bits: 15 g :1 kg= _____________.

2/5 of 15-1/3 of 12 =_______

In a data with 15 number of observations x_(1), x_(2), x_(3), ..., x_(15), sum_(i=1)^(15) x_(i)^(2)=3600 and sum_(i=1)^(15) x_(i)=175 . If the value of one observation 20 was found wroung and was replaced by its correct value 40, them the correct variance of that data is

-15 div 1 = ……..

If A=[(1,-1),(3,4),(-1,5)],B=[(-1,2),(3,1)] then AB=

IF the distance between two points (x,1) and (-1,5) is '5'. Find the value of 'x'.

If A = [(-2,1,0),(3,4,-5)] and B = [(1,-2),(4,3),(-1,5)] then find A + B^T .

Let alpha=sin^(-1)(36/85), beta=cos^(-1)(4/5) and gamma=tan^(-1)(8/15) then