Answer to Question #65007 in Discrete Mathematics for Amarjit Singh

Question

State whether the following statements are true or false. Give reasons for your answer.
i) The rule given below is a function
f :{2, 3}®{4, 7}: f (2) = 4, f (2) = 7, f (3) = 7
ii) For two non-negative integers r and n s.t., r £ n
r
n
r
n
r
n C C C 1
1
+
−
+ =
iii) The normal curve for
= −¥ < < ¥
−
f e x
x
;
2
1 2
2
1
p
attains its maximum at x = 0 .
iv) The magnitude of a vector product u×v is equal to the area of a triangle having u and v as
two of its sides.
v) If X has the uniform distribution on [a, b] , then mean of X is
2
b − a
.

Answer 1

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