Probability Quant Quiz for SBI PO PRE 2019 (Day 24)
Quant Quiz to improve your Quantitative Aptitude for SBI PO & SBI clerk exam quant, IBPS PO quant , IBPS Clerk quant , IBPS RRB quant, and other competitive exams.
Q1. A bag contains 5 red balls and 7 blue balls. Two balls are drawn at random without replacement, and then find the probability of that one is red and other is blue.
A) 33/65
B) 35/66
C) 37/66
D) 41/65
E) None of these
Q2. A bag contains 3 red balls and 8 blacks ball and another bag contains 5 red balls and 7 blacks balls, one ball is drawn at random from either of the bag, find the probability that the ball is red.
A) 93/264
B) 95/264
C) 91/264
D) 97/264
E) None of these
Q3. 12 persons are seated at a circular table. Find the probability that 3 particular persons always seated together.
A) 9/55
B) 7/55
C) 4/55
D) 3/55
E) None of these
Q4. P and Q are two friends standing in a circular arrangement with 10 more people. Find the probability that exactly 3 persons are seated between P and Q.
A) 5/11
B) 4/11
C) 2/11
D) 3/11
E) None of these
Q5. A basket contains 5 black and 8 yellow balls. Four balls are drawn at random and not replaced. What is the probability that they are of different colours alternatively.
A) 56/429
B) 57/429
C) 61/429
D) 68/429
E) None of these
Q6. A bag contains 6 red balls and 8 green balls. Two balls are drawn at random one after one with replacement. What is the probability that Both the balls are green
A) 13/49
B) 15/49
C) 16/49
D) 17/49
E) None of these
Q7. Find the probability that in a leap year, the number of Mondays is 53?
A) 1/7
B) 2/7
C) 3/7
D) 4/7
E) None of these
Q8. A box contains 4 red, 5 black and 6 green balls. 3 balls are drawn at random. What is the probability that all the balls are of same colour?
A) 33/455
B) 34/455
C) 44/455
D) 47/455
E) None of these
Q9. A box contains 6 blue, 5 green and 4 red balls. Two balls are drawn at random. What is the probability that there is no red ball?
A) 3/30
B) 11/21
C) 5/18
D) 11/23
E) None of these
Q10. From a pack of 52 cards, 2 cards are drawn at random. What is the probability that both cards are black card or heart card?
A) 31/102
B) 21/73
C) 1/5
D) 17/100
E) 3/10
Solutions
Q1. Ans(B)
Q2. Ans(C)
Q3. Ans(D)
Taking 3 particular persons as single entity, we have 12 – 3 + 1 = 10 persons to be seated.
Q4. Ans(C)
Q5. Ans(A)
Q6. Ans(C)
Q7. Ans(B)
Q8. Ans(B)
Q9. Ans(B)
Q10. Ans(A)
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