hullo?? n-1=48 => n=47 ???Originally Posted byEvo Guy 911

i think n-1=48 => n=49

so by ur logic

49^2 - 49 -41 = 7

2401 - 49 - 41 = 7

2311 = 7

When we divide 2311 by 7, it gives 330.1428...

now what???

n math induction WONT work also cos we gotta prove its NOT divisble rite?

wht u do is:

suppose n^2 - n -41 IS divisble ...asumption

so n^2 - n - 41 = 7k [where k is a whole number 0,1,2,3...]

since this is true for all values of n, it must be true for n=0

0^2 - 0 - 41 = 7k

-41 = 7k

so k = -5.857... [NOT a whole number so our assumption is false]

just posting so tht mr singh dont get 'jhapped' tomoro in class hehe

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