Quant test-1

1. If a, b, c, ........, x, y, z are 26 natural numbers , then the value of (x – a) (x – b) (x – c)........ (x – y) (x – z) is :

A. 0
B.1
C. 2
D.3
E.4

2. If 1² + 2² + 3² + ................. + 512² = x, then 2² + 4² + 6² + 1024² is equal to :

A. x²
B.x
C. 2x
D.4x
E.16x

3. A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?

A. 30
B. 36
C.48
D. 60
E. 64

4.The size of a television screen is given as the length of the screen’s diagonal. If the screens were flat, then the area of a square 21-inch screen would be how many square inches greater than the area of a square 19-inch screen?

A. 30
B. 40
C.48
D. 60
E. 64

5. If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80, what is the value of z – x ?

A.70
B. 60
C.40
D.20
E. 10

6. 25% of x = 40% of 25. Find x?

A.20
B. 33.33
C.35
D.40
E. 80

7. If a and b are such numbers that a > 0 and b < 0, then which one of the following is always correct?

A. a + b > 0
B. a – b > 0 .
C. a + b < 0
D.a – b < 0
E.a + b = 0

8. The sum of the numerator and denominators of a certain fraction is 8. If 2 is added to both the numerator and the denominator the value of the fraction is increased by 4/35 then the fraction is:?

A. 1/7
B.5/3
C. 3/5
D.35/4
E.4/5

9. If w + z = 28, what is the value of wz ?
when w and z are consecutive odd integers.

A. 225
B.215.
C. 205
D.195.
E.185.

10. If 1 × 2 × 3 × ......... x n is donated by n!, then (8! – 7! – 6!) is equal to :

A. 6 × 7 × 8!
B. 7 × 8 × 6!
C. 6 × 8 × 6!
D.6 × 8 × 7!
E.6 × 7 × 8!