Identify learners who cited a prime number from the list: Anita (49), Pambo (29), Amla (2), Jembo (87). 2. Arrange the fractions 4/9, 3/7, 1/5, 1/2 in ascending order. 3. Calculate 98.51 * 18.

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

• Anita: $49 = 7 \times 7$. 49 is not a prime number.
• Pambo: 29. The only divisors of 29 are 1 and 29. 29 is a prime number.
• Amla: 2. The only divisors of 2 are 1 and 2. 2 is a prime number (it is the smallest and only even prime number).
• Jembo: $87 = 3 \times 29$. 87 is not a prime number.

Pambo and Amla cited prime numbers.

The learners who cited a prime number are: $\boxed{\text{Pambo and Amla}}$

2. Arranging Fractions

• $\frac{4}{9} \approx 0.444...$
• $\frac{3}{7} \approx 0.428...$
• $\frac{1}{5} = 0.2$
• $\frac{1}{2} = 0.5$

$0.2, 0.428..., 0.444..., 0.5$

$\frac{1}{5}, \frac{3}{7}, \frac{4}{9}, \frac{1}{2}$

The fractions in ascending order are: $\boxed{\frac{1}{5}, \frac{3}{7}, \frac{4}{9}, \frac{1}{2}}$

3. Determine the value of $98.51 \times 18$

We can multiply 98.51 by 18.

The product of 98.51 and 18 is 1773.18.

The value is: $\boxed{1773.18}$