NECO Past Questions and Answers - Page 131

651.

Find the Iength of a diagonal of a square whose area is 288cm2.

A.

24cm

B.

48cm

C.

95cm

D.

100cm

E.

124cm

Correct answer is A

No explanation has been provided for this answer.

653.

Find the value of 2a - b if a + b = 8 and 4a - b = 22

A.

2

B.

4

C.

6

D.

8

E.

10

Correct answer is E

No explanation has been provided for this answer.

654.

What is the positive difference between the squares of 2.5 and 2.1 to 1 significant figures?

A.

– 2.0

B.

– 184

C.

-1.84

D.

2

E.

18.4

Correct answer is D

No explanation has been provided for this answer.

655.

If A(I,2,3,...,10) ; B = (-5,-4,.....,-1) ; C = (-1, 0, 1, 2,....5) List all the elements in (B ∪ C) ∩ A

A.

(-1,2,...5)

B.

(-1,1,....5)

C.

(1,2,..5)

D.

(2,3,...10)

E.

(1,2,...10)

Correct answer is C

No explanation has been provided for this answer.