Fiscal year1 1. Show that 5 and-3 are dividers of -15.

2. Show that for all natural n, the natural integer n + 1 is a divider of the integer n? - 1.

Exercise 2

For all relative p, N = 2p? Is +4p-16 an even integer?

Fiscal year3

At the Carnac tourist site, three train routes are offered: circuit

42 minutes by red train. The departure is at 2 p. m. at the same time. A family name

Breuse doesn't manage to find room together and decides to wait for the next one

Occasion of taking a train of your choice.

What time do we have to come back as soon as possible to have the choice of the three trains again?

Please help me!