In an examination of the final year student of a school, 60 offered history, 50 economics and 48 litreture. 30 offered history, economics, and literature. If 10 canddate offered all the 3 three subject find? A) the number that offered history only.
B) the number that offered economics only.

Please it urgent I need the solution, solving, explanation and the veen diagram drawing please help me.

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?