The probability of an event that cannot 2 0 happen The probability of an event that is certain to 3 1 happen 4 An event that cannot happen is called impossible event 5 An event that is certain to happen is called sure event The sum of the probabilities of all 6 1 elementary events of an experiment A die thrown once. Probability of getting a prime no.-(2,3,5); 7 prime number P(E)=3/6=1/2 In well shuffled deck of 52 cards, 8 probability of getting- a) a king of red colour 2/52 b) the jack of hearts 1/52 c) a spade 13/52 d) the queen of diamonds 1/52 A box contains 90 discs which are 9 numbered from 1 to 90, one disc is drawn . Find the probability of getting a) a two digit number 81/90 b)a perfect square number 9/90 c) a number divisible by 5 18/90 The probability expressed as a percentage 10 Greater than 1 of a particular occurrence can never be SURFACE AREAS AND VOLUMS S.NO FILL IN THE BLANKS Answer A surahi is the combination of 1 a sphere and a cylinder _________________ The shape of a glass is usually in the form of 2 frustum of a cone ________________ Surface ara of solid cylinder of radius r and 3 2πr(r+h) height h is _______ A solid cylinder of radius r and height h is 4 placed over same cylinder. Total surface 4πrh+2πr.r area of so formed shape is__________ The curved surface area of a frustum of a 5 πl(R+r) con is_____________ 6 Volume of cylinder is __________ πr.r.h Volume of vertical cylinder is base area 7 height ×_______ 8 Volume of hemispher is____________ 2/3(π.r.r.r)
2 The probability of an event that cannot happen 0 3 The probability of an event that is certain to happen 1 4 An event that cannot happen is called impossible event 5 An event that is certain to happen is called sure event 6 The sum of the probabilities of all elementary events of an experiment 1 7 A die thrown once. Probability of getting a prime number prime no.-(2,3,5); P(E)=3/6=1/2 8 In well shuffled deck of 52 cards, probability of getting- a) a king of red colour 2/52 b) the jack of hearts 1/52 c) a spade 13/52 d) the queen of diamonds 1/52 9 A box contains 90 discs which are numbered from 1 to 90, one disc is drawn . Find the probability of getting a) a two digit number 81/90 b)a perfect square number 9/90 c) a number divisible by 5 18/90 10 The probability expressed as a percentage of a particular occurrence can never be Greater than 1 SURFACE AREAS AND VOLUMS S.NO FILL IN THE BLANKS Answer 1 A surahi is the combination of _________________ a sphere and a cylinder 2 The shape of a glass is usually in the form of ________________ frustum of a cone 3 Surface ara of solid cylinder of radius r and height h is _______ 2πr(r+h) 4 A solid cylinder of radius r and height h is placed over same cylinder. Total surface area of so formed shape is__________ 4πrh+2πr.r 5 The curved surface area of a frustum of a con is_____________ πl(R+r) 6 Volume of cylinder is __________ πr.r.h 7 Volume of vertical cylinder is base area ×_______ height 8 Volume of hemispher is____________ 2/3(π.r.r.r)
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