If a = {1, 2, 3, 4, 5, 6, 7, 8} and b = {2, 4, 6, 8, 10, 12}, the
intersection of sets a and b is
(1) {10, 12} (3) {1, 3, 5, 7}
(2) {2, 4, 6, 8} (4) {1, 2, 3, 4, 5, 6, 7, 8, 10, 12}

don't know sorry bru

step-by-step explanation:

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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