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Probability

Short Answer Type

141. A die is thrown once. Find the probability of getting number less than 3.

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142. A die is thrown once. Find the probability of getting number less than 5.

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143. What is the probability that a number selected have the number 1,2,3..............,15 is a multiple of 4.

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144. Write the Sample Space when a coin is tossed.

S = {H, T}

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145. Two friends were bom in the year 2000. What is the probability that they have the same birthday?

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146. Which of the following can not be the probability of an event?

left parenthesis straight i right parenthesis space 2 over 3 space space space space left parenthesis ii right parenthesis space space minus 1.5 space space space space space left parenthesis iii right parenthesis space 15 percent sign space space space left parenthesis iv right parenthesis space 0.7

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147. A bag contains 3 red balls and 5 black balls. A ball is drawn at randome from the bag. What is the probability that the ball drawn is red? Sol. No. of red balls = 3 No. of black balls = 5 Total no. of balls = 3 + 5 = 8 i.e. n(s) = 8

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148. One card is drawn from a well shuffled deck of 52 cards. Calculate the probability that the card will be a ‘diamond’?

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149. A bag contains 4 red and 6 black balls. A ballis taken out of the bag of random. Find the probability of setting a black ball.

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150. From a well suoffled pack of cards, a card is drawn at random. Find the probability of setting a black queen.

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