The number which when divide by a,b,c leaves remainder x,y,z respectively such that

K= a-x=b-y=c-z 

Find number ?

M is the largest 4 digit number, which when divisible by 4, 5, 6,7 leaves remainder as 2,3,4 and 5 respectively. What will be the remainder when M is divisible by 9.

2x+3y+7=0 ,

3x + 2y+9= 0 find the value of x and y.

Find the principal value of the following inverse function in radian:

\(Sin^{-1}({1}/{2})\)

Find the principal value of inverse function in radian

:\( Cos^{-1}(\frac{1}{√2})\)

What is 2/7 of a week (find)?

A speaks truth in 75% cases and B in 80% of the cases. In what percentage of the cases are they likely to contradict each other, narrating the same incident? 

The class mark of class 90-120 is ?

If sinx + siny + sinz = 3. Find the value of cosx + cosy+ cosz.