12. a) How many numbers of 5 digits can be formed from the digits 4, 5, 6, 7, 8, 9 (no digit being repeated)? How many of these numbers are divisible by 5? b) How many different even numbers can be formed from the 5 digits 3, 5, 6, 7, 8? odd numbers less than 1000 can be formed using the digits 0,2,4,5,7? c) How many vo​

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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vertical=18cm horizontal=18cm hypotenuse=25.5

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