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Math Assignment Ch-14 Class X | Probability
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a) A face card [Ans 3/13]
b) A red face card [Ans 3/26]
c) A spade card [Ans 1/4]
d) A king of red color [Ans 1/26]
e) A jack of heart [Ans 1/52]
f) An ace card [Ans 1/13]
g) A card of spade or ace [Ans 4/13]
h) Either king or queen [Ans 2/13]
i) Neither king nor queen [Ans 11/13]
j) Neither red nor queen [Ans 6/13]
k) 10 of black suit [Ans 1/26]
Question 2.
a) A black ball [Ans 1/2]
b) A red or a black ball [Ans 11/14]
c) A red white or black ball [Ans 1]
d) Not a red ball [Ans 5/7]
e) Neither white nor black ball [Ans 2/7]
f) Not a white ball [Ans 11/14]
Question 3.
a) Difference of the numbers on the two dice is 2 [Ans 2/9]
b) Sum of numbers on the two dice is 10 [Ans 1/12]
c) Sum of numbers on two dice is more than 9 [Ans 1/6]
d) Six will come up at least once [Ans 11/36]
e) Both are odd number [Ans 1/4]
f) Six as a product. [Ans 1/9]
g) A doublet [Ans 1/6]
h) Getting same number [Ans 1/6]
i) Getting different number [Ans 5/6]
j) A total of 9 or 11 [Ans 1/6]
Question 4.
Question 5.
a) A Leap Year [Ans 2/7]
b) In a non leap year [Ans 1/7]
Question 6.
Question 7.
a) Not red [Ans 5/6]
b) A white ball [Ans 1/3]
Question 8.
a)Two tails [Ans 3/8]
b) At least two tails [Ans 1/2]
c) At most two tails [Ans 7/8]
d) At most 3 heads [Ans 1]
e) At least 3 heads [Ans 1/8]
f) Exactly two heads [Ans 3/8]
Question 9.
a) Exactly one head [Ans 2/4 = 1/2]
b) Exactly one tail [Ans 2/4]
c) At least two tails [Ans 1/4]
d ) A most two tails [Ans 4/4 = 1]
e) Not less than one head [Ans 3/4]
f) No tail [Ans 1/4]
Question 10.
a) A heart [Ans 13/49]
b) A club [Ans 10/49]
c) A king [Ans 3/49]
d) A 10 of heard [Ans 1/49]
Question 11.
a) A prime number [Ans 11/35]
b) A multiple of 7 [Ans 1/7]
c) Multiple of 3 or 5 [Ans 16/35]
Question 12.
a) A consonant [Ans 21/26]
b ) A vowel [Ans 5/26]
Question 13.
a) Letter M or A
b) Letter T
c) Letter E
Answer: a) 4/11 b) 2/11 c) 1/11
Question 14.
a) A vowel
b) A consonant
Answer : a) 5/11, b) 6/11
Question 15.
a) Will be a multiple of 5 [Ans 3/4]
b) Will be a multiple of 9 [Ans 0]
c) Will end with 7 [Ans 1/4]
d) Does not end with zero [Ans 2/4]
Question 16.
a) Getting odd number
b) Getting a number divisible by 4
c) Getting a number less than 30
d) Getting a number greater than 50
Hint : All possible numbers with sum 12 are: [39, 93, 48, 84, 57, 75, 66]
Answer: a) 4/7 b) 2/7 c) 0 d) 5/7
Questin 17.
a) Red or Black
b) Not Green
c) Neither white nor Black
Question 18.
b) white
c) white or blue
Answer: a) 5/6 b) 1/3 c) 5/6
Question 19.
a) No Head
b) One Head
c) Two Head
d) Three Head
Answer: a) 1/8 b) 3/8 c) 3/8 d) 1/8
Question 20. Fill in the blanks
a) Probability of sure event…………
b) Probability of impossible event………
c) Range of probability…………
d) Probability of getting sum 13 in single through of a pair of dice………
e) P(E) + P(not E) = …………………..
f) What are equally likely events
Answers:
a) 1 b) 0 c) 0 ≤ P(E) ≤ 1 d) 0 e) 1
Question: 21
If the
probability of a player winning a game is 0.79, then find the probability of
his losing the same game.
Answer: 0.21
Question: 22
From the
data 1, 4, 7, 9, 16, 21, 25, if all the even numbers are removed, then find the
probability of getting a prime number.
Answer: 1/5
Question: 23
In a pack of
playing cards one card is lost. From the remaining cards, a card is drawn at
random. Find the probability that the drawn card is queen of heart, if the lost
card is a black card.
Answer: 1/51
Question: 24
A carton
consists of 60 shirts of which 48 are good, 8 have major defects and 4 have
minor defects. Nigam, a trader, will accept the shirt which are good but Anmol,
another trader, will only reject the shirts which have major defects. One shirt
is drawn at random from the carton,
(a) Find the
probability that it is acceptable to Nigam.
(b) Find the probability that it is acceptable to Anmol.
(c) Find the probability that it is rejected by Nigam.
(d) Find the probability that it is rejected by Anmol.
(e) Find the probability of good shirt.
(f) Find the probability of shirt with defects.
Answers
a) 48/60 |
b) 52/60 |
c) 12/60 |
d) 8/60 |
e) 48/60 |
f) 12/60 |
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