Determine whether 65 is congruent to 11 module

a) ix -2²/8 8/27 b) -ix -22/8 8/27 c) xe-x²/2 d) -ix 4/27 e) None of these

1a) Write 17 x 16 x 15 x 14 x 13 x 12 x 11 x 10 x 9 x 8 in the form „P. 1b) Express 21C, as a sum of two terms from Pascal's Triangle. 1c) How many arrangements are there of the letters in the word ASSOoCIATION? 1d)A club has 25 members. How many ways are there to select a President, Vice-President and Secretary? Assume no one can occupy more than one position. 1e)Which row of Pascal's triangle has a sum of 8,388,608?

Prove in any Pythagorean triple (a, b, c) that either a or b is divisible by 3 and one of a, b, c is divisible by 5.