Pointing to a photograph Rasika said “He is the grandson of my grandmother’s only son.” How is the boy in photograph related to Rasika ?

How many meaningful English words can be made from the letters EOPR, using each letter only once ?

How many such pairs of letters are there in the word EXPERIMENT each of which have as many letters between them in the word as they have in the English alphabet ?

Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to the group ?

X, Y എന്നിവ രണ്ടു പോസിറ്റീവ് സംഖ്യകളാണ്. X:Y=2:3 എങ്കില്‍, XY യുടെ വില എന്താകും?