## Mathematics 2018 Past Questions | JAMB

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

**41. **

The table below shows the frequency of children of age x years in a hospital:

x | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |

f | 3 | 4 | 5 | 6 | 7 | 6 | 5 | 4 |

Use the table to answer the question below:

How many children are in the hospital

**A.**36**B.**40**C.**44**D.**50

**42.**

The figure below is a Venn diagram showing the elements arranged within sets A,B,C,ε.

Use the figure to answer this question

What is n(A U B)1 ?

**A.**2**B.**3**C.**4**D.**7

**43. **What is the loci of a distance 4cm from a given point P?

**A.**A straight line of length 4cm**B.**a circle of radius 4cm**C.**perpendicular to point P at 4cm**D.**a circle of diameter 4cm

**44**. Given that Sin (5\(_x\) − 28)\(^o\) = Cos(3\(_x\) − 50)\(^o\), O\(_x\) < 90\(^o\)

Find the value of x

**A.**14\(^o\)**B.**21\(^o\)**C.**32\(^o\)**D.**39\(^o\)

**45**. Find the average of the first four prime numbers greater than 10

**A.**20**B.**19**C.**17**D.**15

**46. **Find the average of the first four prime numbers greater than 10

**A.**20**B.**19**C.**17**D.**15

**47. **Convert 0.04945 to two significant figures

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

**48. **Calculate 243\(_{six}\) – 243\(_{five}\) expressing your answer in base 10

**A.**0**B.**1**C.**26**D.**46

**49. **Evaluate ∫\(^2_1\) \(\frac{5}{x}\) dx

**A.**1.47**B.**2.67**C.**3.23**D.**3.47

**50. **Tossing a coin and rolling a die are two separate events. What is the probability of obtaining a tail on the coin and an even number on the die?

**A.**1/16**B.**1/6**C.**$\frac{\mathrm{1/}}{4}$**D.**3/8