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The Odds Against A Certain Event Are 5 Ratio 2 And The Odds In Favour Of Another Independent Event Are 6 Ratio 5 The Probability That Atleast One

Solution: Option (2) 52/77 Odds in favour = 2:5 Probability of happening = 2/7 Probability of not happening = 1-(2/7)... View Article

Solution: Option (2) ⅚ The total number of ways that three letters are placed in three envelopes are 3! The... View Article

A box contains 9 tickets numbered 1 to 9 inclusive. If 3 tickets are drawn from the box without replacement,... View Article

1) 1/36 2) 5/36 3) ⅙ 4) 4/13 Solution: Option (1) 1/36 When three dice are rolled, the total number... View Article

Solution: Option (3) (5C2x6C2)/11C7 Total number of balls = 11 Therefore, total cases = 11C7 Favourable cases = 5C3. 6C4... View Article

Solution: Option (2) 0.25 Total number of elements = 100 The set of prime number from 1 to 100 are... View Article

Let S be the sample space of the random experiment of throwing simultaneously two unbiased dice with. six faces (numbered... View Article

Solution: Option (2) ⅕ Given set A = {1, 3, 5, 7, 9} Set B = {2, 4, 6, 8}... View Article

Solution: Option (1) ⅔ Total number of tickets = 12 Let E be the event in which the number to... View Article

Solution: Option (2) 19/56 Let A be the event of picking silver coins from any purse E1 be the event... View Article

Solution: Option (3) 3/20 Given equation is x2-n = 0 Therefore, x = √n, (as we need only positive integral... View Article

Solution: Option (4) 4/9 Total number of elements in a set = 9. Given quadratic equation is x2+4x+ c= 0... View Article

Solution: Option (3) 3/16 The total number of ways = 16 Total number of ways that the determinant is positive... View Article

Solution: Option (1) 1/100 Total number of three digits numbers = 900 Total number of 3 digit numbers in which... View Article

Solution: Option (4) 0.016 Total number of persons in a assembly = 4 Required probability = Probability that the 2... View Article

Solution: Option (1) 5/12 When two dice are thrown, the total number of sample spaces is 36. Favourable outcomes =... View Article

In a college, 25% boys and 10% girls offer mathematics. There are 60% girls in the college. If a Mathematics... View Article

Three numbers are chosen at random from 1 to 20. The probability that they are consecutive, is 1) 1/190 2)... View Article

A complete cycle of a traffic light takes 60 s. During each cycle the light is green for 25 s,... View Article

The probability that the three cards drawn from a pack of 52 cards, are all black, is 1) 1/17 2)... View Article