Compare the given numbers and write "<", ">" or "=" in the boxes: (a) -65__65

Compare the given numbers and write " " or "=" in the boxes: (a) 0__1000

Compare the given numbers and write " " or "=" in the boxes: (a) -2018__-2018

There are four numbers, If we leave out any one number, the average of the remaining three numbers will be 45,60,65 or 70. What is the average of all four numbers ?

Calculate the number of moles in the following . (iii) 65.6 mg of oxygen.

A square is inscribed in the circle x^2+y^2-2x+4y-93=0 with its sides parallel to the coordinate axes. The coordinates of its vertices are (-6,-9),(-6,5),(8,-9),(8,5) (-6,-9),(-6,-5),(8,-9),(8,5) (-6,-9),(-6,5),(8,9),(8,5) (-6,-9),(-6,5),(8,-9),(8,-5)