It would make it more difficult for us to walk on a soapy floor because layer of soap makes floor smooth. The coating of soapy water reduces the friction and the foot cannot make a proper grip on the floor and it starts getting to slip on the floor.
Numbers of defective pens = 12
Numbers of good pens = 132
Total numbers of pen = 132 + 12 = 144 pens
Favourable number of events = 132
Probability of getting a good...
When an aqueous solution of borax is acidified with HCl boric acid is formed
Na2B4O7 + 2HCl + 5H2O → 2NaCl + 4H3BO3 (BORIC ACID)
Boric acid is not a proticacid it...