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Maths Puzzle
If n is a positive integer and (n + 1)(n + 3) is odd, then (n + 2)(n + 4) must be a multiple of which one of the following?
a.3
b.5
c.6
d.8
e.16
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self Other Question
The remainder is 57 when a number is divided by 10,000. What is the remainder when the same number is divided by 1,000?
Dexter was born between October 6th and 10th (6th and 10th excluding). His year of birth is also known. What is the probability of Dexter being born on a Saturday?
A.
0 or 1/3
B.
1/7 or 3/7
C.
1/3 or 1/7
D.
Cannot be determined