Problem
COM-B1-M03-P010 Three Nonconsecutive Numbers
#10
★★☆☆☆ Level 2 of 5
How many \(3\)-element subsets of \(\{1,2,\ldots,10\}\) contain no consecutive numbers?
Use the shift \(b_i=a_i-(i-1)\).
Let \(a_1
Standard shift.