Q1 of 18 Page 26

The probability that it will rain tomorrow is 0.85. What is the probability that it will not rain tomorrow?

The probability of tomorrow rain P(E) = 0.85


Probability of not raining is given by P() = 1 – P(E)


Therefore probability of not raining = P() = 1 – 0.85 = 0.15


More from this chapter

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2

A die thrown. Find the probability of getting:

(i) a prime number


(ii) 2 or 4


(iii) a multiple of 2 or 3

 3

In a simultaneous throw of a pair of dice, find the probability of getting:

(i) 8 as the sum


(ii) a doublet


(iii) a doublet of prime numbers


(iv) a doublet of odd numbers


(v) a sum greater than 9


(vi) An even number on first


(vii) an even number on one and a multiple of 3 on the other


(viii) neither 9 nor 11 as the sum of the numbers on the faces


(ix) a sum less than 6


(x) a sum less than 7


(xi) a sum more than 7


(xii) at least once


(xiii) a number other than 5 on any dice.

 4

Three coins are tossed together. Find the probability of getting:

(i) exactly two heads


(ii) at least two heads


(iii) at least one head and one tail


(iv) no tails

 5

A card is drawn at random from a pack of 52 cards. Find the probability that the card drawn is:

(i) a black king


(ii) either a black card or a king


(iii) black and a king


(iv) a jack, queen or a king


(v) neither a heart nor a king


(vi) spade or an ace


(vii) neither an ace nor a king


(viii) neither a red card nor a queen


(ix) other than an ace


(x) a ten


(xi) a spade


(xii) a black card


(xiii) the seven of clubs


(xiv) jack


(xv) the ace of spades


(xvi) a queen


(xvii) a heart


(xviii) a red card