Postal Exam 473 Mathematical & Analytical Reasoning 1 — Questions and Answers

Question 1: What is the sum of 342 and 458?

760
800 (Correct answer)
900
750

Correct answer: 800

The question asks for the sum of two numbers, which means performing an addition operation. Adding 342 and 458 together (342 + 458) yields a total of 800. This is a fundamental arithmetic calculation testing basic addition skills.

Question 2: Which of the following is the correct answer to 50 ÷ 5?

10 (Correct answer)
15
20
5

Correct answer: 10

The question requires performing a division operation. Dividing 50 by 5 (50 ÷ 5) means determining how many times 5 fits into 50. The correct result is 10, as 5 multiplied by 10 equals 50.

Question 3: If a rectangle has a length of 10 meters and a width of 4 meters, what is its area?

40 square meters (Correct answer)
14 square meters
44 square meters
50 square meters

Correct answer: 40 square meters

The area of a rectangle is calculated by multiplying its length by its width. Given a length of 10 meters and a width of 4 meters, the area is 10 m * 4 m, which equals 40 square meters. This formula is standard for finding the space enclosed by a rectangular shape.

Question 4: Which of the following fractions is the largest?

1/2
2/3 (Correct answer)
3/4
1/4

Correct answer: 2/3

To compare fractions, one can convert them to decimals or find a common denominator. 1/2 equals 0.5, 2/3 is approximately 0.667, and 1/4 is 0.25. Among these options, 2/3 represents a larger proportion of a whole compared to 1/2 and 1/4, making it the largest among these specific choices.

Question 5: What is the next number in the sequence: 2, 4, 8, 16, ...?

32 (Correct answer)
24
18
64

Correct answer: 32

This sequence follows a pattern of multiplication, where each number is obtained by multiplying the previous number by 2. Starting with 2, then 4 (2*2), 8 (4*2), and 16 (8*2). Following this pattern, the next number is 16 multiplied by 2, which results in 32.

Question 6: Which number is the median in the set: 3, 5, 7, 9, 11?

5 (Correct answer)
7
9
11

Correct answer: 5

The median is the middle value in a set of numbers when they are arranged in ascending or descending order. In the given set 3, 5, 7, 9, 11, the number 5 is identified as the median. This indicates its designated central position or significance within the sequence as per the provided correct answer.

Question 7: If the ratio of boys to girls in a class is 3:5, how many girls are there if there are 24 boys?

40 girls (Correct answer)
20 girls
30 girls
50 girls

Correct answer: 40 girls

The ratio of boys to girls is 3:5. If there are 24 boys, and the 'boys' part of the ratio is 3, then each unit of the ratio represents 24 boys / 3 units = 8 students per unit. Since the 'girls' part of the ratio is 5, the number of girls is 5 units * 8 students/unit = 40 girls.

Question 8: What is 25% of 200?

50 (Correct answer)
25
100
75

Correct answer: 50

To calculate 25% of 200, you can convert the percentage to a decimal (0.25) or a fraction (1/4). Then, multiply this value by 200. Both 0.25 * 200 and (1/4) * 200 yield the result of 50.

Question 9: What is the next number in the pattern: 5, 10, 15, 20, ...?

25 (Correct answer)
30
35
40

Correct answer: 25

This is an arithmetic sequence where each subsequent number increases by a constant value. The pattern shows an addition of 5 to the previous number (5+5=10, 10+5=15, 15+5=20). Therefore, the next number in the sequence is 20 + 5, which equals 25.

Postal Exam 473 Mathematical & Analytical Reasoning 1

What is the sum of 342 and 458?