Knock out the true statements

Exercise and reference answers

Questions

1. Question

   Eliminate the true statements about the expansion.

   Choices

   1. Item

      Both indices rise together

      Correct

      Yes

   2. Explanation

      It falls by unity through the successive terms.

      Item

      The index of a decreases by one each term

   3. Explanation

      It starts at zero and ends at n in the last term.

      Item

      The index of b starts at zero

   4. Explanation

      In every term their sum equals the index of a plus b.

      Item

      The two indices always sum to n

Instructions

Remove the statements that are true. One false one should survive.

Explanation