Quantitative Analysis and numerical Part 3, Free Civil Service Examination Reviewer

Direction: Each of the following questions and problems and number series, choose the correct answer from the choices given.

1. Write 3.4% as a fraction.
1) 3.4/100
2) 3.4/100
3) 34/100
4) .34/1000
5) 34/100

Ans: 1

2. Write ¾ % as a decimal.
1) 75
2) 075
3) .0075
4) .00075
5) 7.5

Ans: 3

3. The number missing in the series 6, 12, 20, 30, ?, 56, 72 is ?
1) 38
2) 42
3) 44
4) 48
5) 52

Ans: 2
( 6 + 6 = 12 + 8 = 20 + 10 = 30 + 12 = 42 + 14 = 56 + 16 = 72 )

4. If ;he following numbers are arranged in order from smallest to the largest, what will be the correct order?
a) 9/13
b) 13/9
c) 70%
d) 1/70

1) bacd
3) cdab
4) bdca
5) acdb

Ans: 5

a. 9/13=69; c. 70%=70; d. 1/70=1.42; b. 13/9=1.44

5. 3 is 6% of a certain number. What is the number?
1) 53
2) 50
3) 48
4) 18
5) 24

Ans: 2

6%X = 3; .06X  3
.06    .06

X = 50

6. What is the average of 0.6, 6.6, 0.4, and 2.4?
1
10
2 1/5
2
12

Ans: 3

0.6 + 6.6 + 0.4 + 2.4 = 10/4 = 2.5 or 2 ½

7. what is the sum of ̀√12 + √27?
√29
5 √3
3 √5
13√3
7√3

Ans: 2

√12  =  √4 √3         √27  =  √9  √3
=  2 √3                 = 3    √3
2√3 + 3√3
= 5 √3

8. Find 65% of 75.
4.87
488
48.75
487.50
48.80

Ans: 3

75 x 65/100 = 4875/100 = 48.75

9. P25.00 is 20% of what?
P1,250
P125.00
P128.50
P120.00
P500

Ans: 2

20X = 25
.20     .20

= 125

10. 12 is 125% of what number?
9.6
8
9
10
8.6

Ans: 1

125% = 1 ¼ or 5/4
= 5X  =  12 5X   = 12(4) X = 48
4          5            5                  5

X = 9.6

11. What percent of 16 is 40?
2.5%
2500%
¼
250%
25%

Ans: 4

16X  = 40
16          16

X= 2.5 x 100 = 250%

12. 1 ¼ subtracted from its reciprocal is?
-9/20
45
2.25
9/20
-1/5

Ans: 1

1 ¼  =  5/4 4/5 – 5/4  =  16 – 25
20 = -9/20
(20/5X4=16; 20/4x5=25)

13. What is the ratio of ¼ to 3/5?
1:30
3:20
5:12
3:4
5:4

Ans: 3

¼ : 3/5 = ¼ / 5/3 = 5/12 or 5:12 LCD = 12

14. what is the difference between √150 and √54?
3√6
16√6
√96
6√2
2√6

Ans: 5

√150 = √6  √25=5√6   ;  √54  =  √6  √9  =3√6
= 5√6-3√6=2√6

15. One tenth is what part of three-fourths?
3/40
1/8
2/15
15/2
40/3

Ans: 3

1/10  = X ( ¾ ) = 1/10 = 3X/4  =  30X/30 = 4/30 ; X = 2/15

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