What is the least common multiple of 7 and 12

Step-by-step explanation:

You can find the LCM by listing the multiple for each factor.

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84

12, 24, 36, 48, 60, 72, 84

Is this case, the factor 84 is the LCM

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percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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