A repeater is a combination of

(A) : Repeaters are used to extend the range of communication (R) : Repeater is combination of a receiver and a transmitter.

In a certain strange language,words are written with letters from the following six- letter alphabet: A,K,K,N,R, U.Each word consists of 6letters and none of the letters repeat.Each combination of these 6 letters a word in this language.The word KANGUR remains in the dictionary at

How many 3 letter code combinations are possible using the first 10 letters of English alphbets if: i. no letter can be repeated, ii. letters can be repeated.

How many 3 letter code combinations are possible using the first 10 letters of English alphbets if: i. no letter can be repeated, ii. letters can be repeated.

Division as repeated subtraction

A combination lock on a suitcase has 3 wheels, each labelled with nine digits from 1 to 9. If an opening combination is a particular sequence of three digits with no repeats, what is the probability of a person guessing the right combination ?

A combination lock on a suitcase has 3 wheels, each labelled with nine digits from 1 to 9. If an opening combination is a particular sequence of three digits with no repeats, what is the probability of a person guessing the right combination ?