Psychology Trick: Which Chocolate Bar Is Sweeter?

Psychology is :

Psychology is the science of:

Psychology: Mind :: Ornithology : ?

Educational psychology is branch of psychology. Psychology is a science. Who is the father to experimental psychology?

Psychology : Mind : : Arithmetic : ?

The cost of an ice-cream cone is Rs. 1.50 more than the cost of a particularr chocolate bar. If the chocolate bar costs Rs.y, then the ice-cream cone costs

Initially a shopkeeper had a chocolates. A customer bought 10% chocolate then another customer bought 20% of the remaining chocolates, after that one more customer purchased 25% of the remaining chocolates. Finally shopkeeper is left with 270 chocolates in his shop. How many chocolates were there initially in his shop ?

A box contains 5 strawberry chocolates, 6 coffee chocolates and 2 pepperint chocolates. Find the probability of each of the following events , if one of the chocolates is picked form the box at random . (i) it is a coffe chocolate . (ii) it is a peppermint chocolate .