N is a positive integer
explain why n(n-1) must be an even number

if 'n' is positive and odd then reducing it by one gives you an even; so then you are multiplying and even and an odd which results in an even

if 'n' is positive and even then reducing it by one gives you an odd; so then you are multiplying and even and an odd which results in an even

Step-by-step explanation:

11

step-by-step explanation:

32.50-7.50=25

225/25=11

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.