AppliedNumeric answer
How many integers from to share no common factor with other than ?
Answer with a number. Fractions, powers and expressions like 23/6 or C(52,5) are read correctly in practice.
The worked solution is in Premium
The answer, the full working and the one idea to take away – for this and all 1,322 questions in the bank. Answer it in practice and your working is marked, with a known mistake named when you make one.
Learn the method
Reported in interviews at
More counting and combinatorics questions
- Hats at a party, part 1 of 3Foundation
- Five people each take one of five coats at random.Applied
- A chessboard has two opposite corners removed.Applied
- How many integers from 1 to 1000 are divisible by 2, 3 or 5?Applied
- Six traders drop their badges in a box and each draws one at random.Applied
- Five distinct orders are routed to three venues, and every venue must receive…Applied