Entry Test MCQ :: Numbers

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31.

If a*b represents the number of integers greater than a and less than b what is value of -2? * 3?2

A.	13	B.	12
C.	11	D.	10
E.	9

32.

If x and y are positive integers and (17x)y=1717 what is the average of x and y

A.	17	B.	18
C.	9	D.	can not be determined

33.

Find an integer that has a remainder of 2 when it is divided by 3 4 5 6 and 7

A.	420	B.	423
C.	417	D.	425
E.	none

34.

David has two electronic beepers one of them beeps every 5 seconds the other beeps every 11 seconds. If they are turned on at exactly the same time how many times during the next hour will both beepers beep at the same time?

A.	70	B.	100
C.	66	D.	65

35.

For any number w let #w# be defined by the equation #w# = -[w2 (w-1)] what is the value of #-1#?

A.	-2	B.	-1
C.	2	D.	1
E.	0

36.

Let <> = 5x+2 for all +ve integers. If <>=12 then x =

A.	2	B.	10
C.	12	D.	15
E.	20

37.

If xz which must be true?

A.	x+z < x	B.	y-x < z
C.	z+y < y	D.	x+y > y+z
E.	2x > z

38.

If a>1 and ab-4=4-b then b =? If a is an integer.

A.	4	B.	5
C.	7	D.	10
E.	12

39.

If x>y>z which cannot be true?

A.	x+y > z	B.	x-y = z
C.	Y+z < xy	D.	z > xy

40.

If xz>0 which is the greatest?

A.	x/y	B.	y/x
C.	z/x	D.	x/z