Callosobruchus maculatus is a common pest of

• A. Sorghum
• B. Rice
• C. Maize
• D. Cowpea

The problem of the minority groups in Nigeria was first raised in the

• A. 1953/54 constitutional conferences
• B. 1957/58 constitutional conference
• C. 1960 constitution
• D. 1979 constitution

The table shows the number of children per family in a community.

(a) Find the : (i) mode ; (ii) third quartile ; (iii) probability that a family has at least 2 children.

(b) If a pie chart were to be drawn for the data, what would be the sectorial angle representing families with one child?

Which of the following scales would allow the greatest amount of detail on a map?

• A. 1: 20
• B. 1: 50
• C. 1: 500
• D. 1: 2,500

Calculate the amount in moles of silver deposited when 9650C of electricty is passed through a solution of silver salt [= 96500 C/mol]

• A) 0.05
• B) 10.80
• C) 10.00
• D) 0.10

Which process is used by large retailers to study trends?

• A. Data mining
• B. Data selection
• C. Data conversion
• D. Pos

Birth and death rates are often stated as the number of cases per?

• A. 1 000 per year
• B. 1 000 000 per year
• C. 10 per year
• D. 100 per year

The tourist centre of Ogbunike cave is located near

• A. Kainji in Niger State
• B. Yankari in Bauchi state
• C. Ikeja in Lagos state
• D. Onitsha in Anambra state

Which African country experienced a prolonged and violent struggle for independence against French colonial rule, culminating in a war of independence that lasted from 1954 to 1962?

• A. Algeria
• B. Tunisia
• C. Tunisia
• D. Morocco

The twenty-first term of an Arithmetic Progression is \(5\frac{1}{2}\) and the sum of the first twenty-one terms is \(94\frac{1}{2}\). Find the :

(a) first term ; (b) common difference ; (c) sum of the first thirty terms.