csat-suneung 2018 Q8

csat-suneung · South-Korea · csat__math-humanities 3 marks Arithmetic Sequences and Series Counting or Combinatorial Problems on APs
Find the number of ways to partition the natural number 11 into natural numbers between 3 and 7 (inclusive). [3 points]
(1) 2
(2) 4
(3) 6
(4) 8
(5) 10
Find the number of ways to partition the natural number 11 into natural numbers between 3 and 7 (inclusive). [3 points]\\
(1) 2\\
(2) 4\\
(3) 6\\
(4) 8\\
(5) 10