Question

how many times in the number 4 listed?
stem | leaf
0 | 4
1 | 0,7,8
2 | 3,3,4,5,8
3 | 2,2,2,3,5,7,7
4 | 0,0,1,1,3
5 | 6,7

Explanation:

Step1: Check Stem 0

In stem 0, the leaf is 4. So count 1.

Step2: Check Stem 2

In stem 2, the leaves are 3, 3, 4, 7, 8. So count 1 (for the 4 here).

Step3: Check other stems

Stems 1, 3, 4, 5 have no 4 in their leaves (stem 4's leaves are 0,0,1,1,3; stem 1's are 0,7,8; stem 3's are 2,2,2,3,5,5,7,7; stem 5's are 6,7).

Step4: Sum the counts

Total count = 1 (stem 0) + 1 (stem 2) = 2. Wait, no, wait: Wait stem 0: leaf 4 (1), stem 2: leaf 4 (1), is that all? Wait no, wait the stem - leaf plot: stem 0, leaf 4 (so number 4); stem 2, leaf 4 (so number 24? Wait no, stem - leaf plot: stem is tens place, leaf is ones place. Wait, no, maybe I misinterpreted. Wait, stem 0: leaf 4 is 04 (i.e., 4), stem 2: leaf 4 is 24? Wait no, the question is "how many times is the number 4 listed?" Wait, maybe the numbers are single - digit? Wait, no, stem - leaf plot: stem is the leading digit, leaf is the trailing digit. But maybe in this case, the numbers are single - digit? Wait, no, stem 0: leaf 4 is 4, stem 1: leaves 0,7,8 are 10,17,18? No, maybe the stem is the tens place, but if stem is 0, it's single - digit. Wait, the question is "how many times is the number 4 listed?" So we need to count all leaves that are 4, regardless of stem? Wait, no, the number is composed of stem and leaf? Wait, no, maybe the stem - leaf plot is for single - digit numbers? Wait, stem 0: leaf 4 (number 4), stem 1: leaves 0,7,8 (numbers 10,17,18? No, that can't be. Wait, maybe the stem is the tens place, but if stem is 0, it's 0 - 9, stem 1 is 10 - 19, etc. But the question is "how many times is the number 4 listed?" So we need to find all numbers (stem*10 + leaf) that have a 4 in them? Or all leaves that are 4? Wait, the question is "how many times in the number 4 listed?" Maybe it's "how many times is the digit 4 listed?" Wait, the original question: "How many times in the number 4 listed?" Maybe a typo, should be "How many times is the digit 4 listed?"

Let's re - examine:

Stem 0: leaf 4 → digit 4 (count 1)

Stem 2: leaf 4 → digit 4 (count 1)

Stem 4: leaves 0,0,1,1,3 → no 4s

Stem 1: leaves 0,7,8 → no 4s

Stem 3: leaves 2,2,2,3,5,5,7,7 → no 4s

Stem 5: leaves 6,7 → no 4s

Wait, but maybe the stem is the ones place? No, that doesn't make sense. Wait, maybe the numbers are single - digit, so stem is 0 for 0 - 9, stem 1 for 10 - 19? No, that's not single - digit. Wait, maybe the question is "how many times does the digit 4 appear in the leaves?"

So leaves:

Stem 0: [4] → 1 four

Stem 1: [0,7,8] → 0 fours

Stem 2: [3,3,4,7,8] → 1 four

Stem 3: [2,2,2,3,5,5,7,7] → 0 fours

Stem 4: [0,0,1,1,3] → 0 fours

Stem 5: [6,7] → 0 fours

Total: 1 + 1 = 2.

Wait, but the options are 1, 0, 4, 2. So the correct answer should be 2.

Answer:

2