15. How many non-negative integral values of x satisfy the equation `[x/5] = [x/7] ? `

How many non-negative integral values of x satisfy the equation [x/5]=[x/7] (Here [x] denotes the greatest integer less than or equal to x. (For example (3.4) = 3 and [-2.3] = - 3).

How many real values of x satisfy the equation |x|+|x-1|=1 ?

How many integral values of x and y satisfy the equation 5x+9y=7 , where -500 lt x lt 500 and -500 lt y lt 500 +

The number of integral values of x satisfying the equation |x-|x-4||=4 is

The number of integral values of x satisfying the equation |x-|x-4||=4 is

The number of integral values of x satisfying the equation |x-|x-4||=4 is

How many distinct integral values of a satisfy the equation 2^(2a)-3.2^(a+2)+2^(5)=0?