Section - D 25 a. In quadrilateral ACBD.AC-AD and AB bisects A (see figure). Show that AABC = AABD. What can you say about BC and BD? C A 8 D b. AD and BC are equal perpendiculars to a line segment AB (see figure). Show that CD bisects AB. B с 26 a. A box contains 100 cards marked with numbers 1 to 100. If one card is drawn at random from the box, find the probability that the number on card is: i) a multiple of 7 ii) a number smaller than 30 iii) a prime number iv) an odd number b. The table given below shows the ages of 75 teachers in a school. Age (in years) Number of teachers 18-29 3 30-39 27 40-49 37 50-59 8 A teacher from this school is chosen at random. What is the probability that the selected teacher is (a) 40 or more than 40 years old? (b) of an age lying between 30-39 years (including both)? (c) 18 years or more old? (d) Above 60 years of age?
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Section - D 25 a. In quadrilateral ACBD.AC-AD and AB bisects A (see figure). Show that AABC = AABD. What can you say about BC and BD? C A 8 D b. AD and BC are equal perpendiculars to a line segment AB (see figure). Show that CD bisects AB. B с 26 a. A box contains 100 cards marked with numbers 1 to 100. If one card is drawn at random from the box, find the probability that the number on card is: i) a multiple of 7 ii) a number smaller than 30 iii) a prime number iv) an odd number b. The table given below shows the ages of 75 teachers in a school. Age (in years) Number of teachers 18-29 3 30-39 27 40-49 37 50-59 8 A teacher from this school is chosen at random. What is the probability that the selected teacher is (a) 40 or more than 40 years old? (b) of an age lying between 30-39 years (including both)? (c) 18 years or more old? (d) Above 60 years of age