NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 291:

• JAMB 1989

Which of the following is in descending order?

A. \(\frac{9}{10} \frac{4}{5} \frac{3}{4} \frac{17}{20}\)
B. \(\frac{4}{5} \frac{9}{10} \frac{3}{4} \frac{17}{20}\)
C. \(\frac{9}{10} \frac{17}{20} \frac{4}{5} \frac{3}{4}\)
D. \(\frac{4}{5} \frac{9}{10} \frac{17}{20} \frac{3}{4}\)

Question 292:

• JAMB 1989

Which of the following is in descending order?

A. \(\frac{9}{10} \frac{4}{5} \frac{3}{4} \frac{17}{20}\)
B. \(\frac{4}{5} \frac{9}{10} \frac{3}{4} \frac{17}{20}\)
C. \(\frac{9}{10} \frac{17}{20} \frac{4}{5} \frac{3}{4}\)
D. \(\frac{4}{5} \frac{9}{10} \frac{17}{20} \frac{3}{4}\)

Question 293:

• JAMB 1989

Evaluate 2700 000 x 0.03 + 18 000

A. 4.5 x 10⁰
B. 4.5 x 10¹
C. 4.5 x 10²
D. 4.5 x 10³

Question 294:

• JAMB 1989

The prime factors of 2520 are

A. 2, 9, 5
B. 2, 9, 7
C. 2, 3, 5, 7
D. 2, 3, 7, 9

Question 295:

• JAMB 1989

If \(12_{e} = X_{7}\), where e = 12, find X.

A. 20
B. 15
C. 14
D. 12