If n is an integer and f(n) = f(n – 1) – n, what is the value of f (4)?
(1) f(3) = 14
(2) f(6) = -1
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cramya
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f(n) = f(n-1) + n
To find f(4)
Stmt I
f(3) = 13
f(4) = f(3) - 4
Can find f(4) from here
SUFF
Stmt II
f(6)=-1
f(6) = f(5) - 6
-1 = f(5) - 6
-1 = (f(4) - 5 ) - 6
Can find f(4) from here
SUFF
Choose D)
To find f(4)
Stmt I
f(3) = 13
f(4) = f(3) - 4
Can find f(4) from here
SUFF
Stmt II
f(6)=-1
f(6) = f(5) - 6
-1 = f(5) - 6
-1 = (f(4) - 5 ) - 6
Can find f(4) from here
SUFF
Choose D)
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ronniecoleman
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