## Mathematics 2018 Past Questions | JAMB

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

11. Convert 0.04945 to two significant figures

• A. 0.040
• B. 0.049
• C. 0.050
• D. 0.49

12. The probabilities that John and James pass an examination are $$\frac {3}{4}$$and $$\frac {3}{5}$$ respectively. Find the probability of both boys failing the examination.

• A.$$\frac {1}{10}$$
• B.$$\frac {2}{10}$$
• C.$$\frac {9}{20}$$
• D.$$\frac {11}{20}$$

13.  An arc of a circle of radius 14cm subtends angle 300° at the centre. Find the perimeter of the sector formed by the arc (take π = 22/$\frac{7}{}$)

• A. 14.67cm
• B. 42.67cm
• C. 101.33cm
• D. 513.33cm

14. Simplify  $$\frac {25^{\frac{2}{3}} \div 25^{\frac{1}{6}}} {(\frac{1}{5})^{\frac{7}{6}} \div (\frac{1}{5})^{\frac{1}{6}}}$$

• A.25
• B$$\frac{1}{5}$$
• C.1
• C.$$\frac{1}{25}$$

15.  $$\text{P} = \left[\frac{\mathrm{Q(R – T)}}{15}\right]^\frac{1}{3}$$

Make T the subject of the relation.

• A. T = $$\frac{R + P3}{15Q}$$
• B. T = $$\frac{R – 15P^3}{Q}$$
• C. T =R – $$\frac{15P^3}{Q}$$
• D. T = $$\frac{15R + Q}{P^3}$$

16.  What is the place value of 9 in the number 3.0492?

• A. $$\frac{9}{10000}$$
• B. $$\frac{9}{1000}$$
• C. $$\frac{9}{100}$$
• D. $$\frac{9}{10}$$

17.  If the simple interest on a sum of money invested at 3% per annum for 2 $\frac{1/}{2}$  years is N123,

find the principal.

• A. N676.50
• B. N820
• C. N1,640
• D. N4,920

18. A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?

• A. N16,200
• B. N14,200
• C. N12,000
• D. N8,000

19. The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.

 Mark 0 1 2 3 4 5 Frequency 1 2 7 5 4 3

What is the median mark?

• A. 1
• B. 2
• C. 3
• D. 4

20. The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.

 Mark 0 1 2 3 4 5 Frequency 1 2 7 5 4 3

What is the probability of selecting a student from the group that scored 2 or 3

• A.$$\frac{1}{11}$$
• B.$$\frac{5}{22}$$
• C.$$\frac{7}{22}$$
• D.$$\frac{6}{11}$$

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