In a railway compartment, there are 2 rows of seats facing each other with accommodation for 5 in each, 4 wish to sit fa…

A tea expert claims that he can easily find out whether milk or tea leaves were added first to water just by tasting the…

In how many different ways can the letters of the word ENGINEERING be arranged?

In how many different ways can the letters of the word SMART be arranged?

A letter lock consists of 4 rings, each ring contains 9 non-zero digits. This lock can be opened by setting four digit c…

A committee of 5 members is to be formed by selecting out of 4 men and 5 women. In how many different ways the committee…

In how many different ways can letters of the word OFFICES be arranged?

What is the total number of ways in which Dishu can distribute 9 distinct gifts among his 8 distinct girlfriends such th…