Answers must be correct. Or else it will be flagged. All sub-parts need to be answered with step by step process showing all work and reasoning.

YOU MUST PROVIDE ALL ANSWERS AS PER THE QUESTIONS.

DON'T PROVIDE WRONG ANSWERS AND DON'T ANSWER IF YOU DON'T WANT TO ANSWER ALL SUB-PARTS. INCOMPLETE ANSWERS WILL BE FLAGGED

DISCRETE STRUCTURES

Answers must be correct. Or else it will be flagged. All sub-parts need to be answered with step by step process showing all work and reasoning.

YOU MUST PROVIDE ALL ANSWERS AS PER THE QUESTIONS.

DON'T PROVIDE WRONG ANSWERS AND DON'T ANSWER IF YOU DON'T WANT TO ANSWER ALL SUB-PARTS. INCOMPLETE ANSWERS WILL BE FLAGGED

DISCRETE STRUCTURES

How many seven-digit numbers can be made from the digits 1, 2, 3, 4, 5, 6, and 7 if digits cannot be repeated and the odd digits must appear in an unbroken sequence? For example, 3571264 is such a number but 7234615 is not 1.b Show that (Z) = (n-k) What is the coeficient in front of a in the expansion of (e -1)