This is the Multiples Choice Questions Part 3 of Numerical Ability. In preparation for the Civil Service Exam, practice, and familiarize every question we have, it might be included in the actual examination. Good luck.

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## Numerical Ability Part 3

1. Radicals: √0.000025

a. 0.5

b. 0.05

c. 0.005

d. 0.00005

**Answer: c**

2. Number Series: 1/12, 1/6, 1/4, 1/3, _____

a. 1

b. 1/3

c. 5/12

d. ½

e. None of the above

**Answer: c**

3. A chemist has 400 milliliters of a solution of 20% alcohol on hand, and he wants to mix it with enough pure alcohol to turn it into a 30% alcohol solution. How much pure alcohol will this require?

a. 30

b. 40

c. 50

d. 60

e. 57

**Answer: e**

4. What is the percentage decrease from 80 to 60?

a.) 33.33%

b.) 25%

c.) 20%

d.) 75%

e.) None of the above

**Answer: b**

5. What is the percentage increase from 60 to 80?

a.) 33.33%

b.) 25%

c.) 20%

d.) 75%

e.) None of the above

**Answer: a**

6. A businessman sells 60% English books and still has 28 English books. Originally, he had:

a.) 47

b.) 39

c.) 60

d.) 70

e.) None of the above

**Answer: d**

7. Twelve and one half percent of 200 is what number?

a.) 112

b.) 12

c.) 50

d.) 25

e.) None of the above

**Answer: d**

8. If the price of a book is first decreased by 25% and then increased by 20%, then the net change in the price will be :

a.) 10%

b.) 20%

c.) 30%

d.) 40%

e.) None of the above

**Answer: a**

9. In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:

a. 20 L

b. 30 L

c. 40 L

d. 60 L

e. none of the above

**Answer: d**

180.) Participants in a certain conference from Luzon, Visayas, and Mindanao are in the ratio of 4:3:2. If there are 120 participants from Luzon, how many participants are there in all?

a. 270

b. 150

c. 240

d. 420

e. None of the above

**Answer: a**

11. The sum of 63, 97, 642 and 22 is ______.

a. 871

b. 860

c. 824

d. 842

**Answer: a**

12. Which of the following is the product of 2, 2, 3 and 3?

a. 36

b. 24

c. 60

d. 48

**Answer: a**

13. What number do you get when you divide 1170 by 78?

a. 20

b. 17

c. 18

d. 15

**Answer: d**

14. The difference of 25657 and 12980 is _____.

a. 12677

b. 11734

c. 12776

d. 12767

**Answer: a**

15. Subtract 92 from the sum of 128, 311 and 722.

a. 1077

b. 1067

c. 1063

d. 1072

**Answer: b**

16. Divide the product of 97 and 18 by 6.

a. 291

b. 302

c. 289

d. 278

**Answer: a**

17. Add the following numbers, 111.75, .03, 752.5 and 10.620.

a. 862.811

b. 873.900

c. 874.900

d. 875.910

**Answer: c**

18. Which of the following numbers is divisible by 15?

a. 301

b. 270

c. 218

d. 4629

**Answer: b**

19. What do you get when you multiply the sum of 6411, 7210, 8103 and 6012 by 6?

a. 152346

b. 167417

c. 172408

d. 166416

**Answer: d**

20. Multiply 7200 by .06. What do you get?

a. 432

b. 432.01

c. 432.06

d. 432.1

**Answer: a**