Probability MCQs

Showing 19 questions (Total: 119)

Probationary Officer 02 #101

A die is rolled and a coin is tossed What is the probability that a 3 will be rolled and a tail tossed?

A: 1/2
B: 1/6
C: 1/8
D: 1/12
Office of the Comptroller General of Accounts (CGA) #102

একটি মুদ্রা ২ বার নিঃক্ষেপ করলে অন্তত ১ বার Head পড়ার সম্ভবনা কত?

ক: ১/৩
খ: ১/৪
গ: ৩/৪
ঘ: ১/২
Bangladesh Agricultural Development Corporation (BADC) #103

একটি গোল মুদ্রা টেবিলে রাখা হল । এই মুদ্রার চারপাশে একই মুদ্রা কতটি রাখা যেতে পারে যেন তারা মাঝের মুদ্রাটিকে ও দু'প্রাশের দুটি মুদ্রাকে স্পর্শ করে ?

ক: ৪
খ: ৬
গ: ৮
ঘ: ১০
Government Job and Other Recruitment Exams #104

A coin is thrown 3 times in the air. What is the probability that one head is followed by two tails?

A: 12
B: 14
C: 18
D: 56
Bangladesh Bank #105

Jennifer flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?

A: 1
B: 1/16
C: 1/2
Primary School Assistant Teacher Recruitment Test #106

আবহাওয়া অফিসের রিপোর্ট অনুযায়ী ২০২২ সালে মে মাসে চতুর্থ সপ্তাহে বৃষ্টি হয়েছে মোট ৫ দিন। ঐ সপ্তাহে রবিবারে বৃষ্টি না হওয়ার সম্ভাবনা কত?

ক: ২/৭
খ: ১/৭
গ: ১
ঘ: ৫/৭
First Security Islami Bank Ltd #107

A hat contains 12 cards marked with a star and 18 unmarked cards. What is the probability that one card slelected at random will be marked with a star?

A: 3/5
B: 2/5
C: 2/3
D: 5/2
Dhaka Bank Ltd #108

A certain jar contain 60 jellybeans where 22 white, 18 green, 11 yellow, 5 red and 4 purple . If a jellybean is to be chosen at random , what is the probability that the jellybean will be neither red not purple?

A: 0.09
B: 0.85
C: 0.54
D: 0.91
Bangladesh Bank #109

In a group of buffaloes and ducks, the number of legs is 24 more than twice the number of heads. What is the number of buffaloes?

A: 12
B: 10
C: 8
D: 6
Bangladesh Bank #110

A fair coin is thrown in the air four times. If the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss ?

A: 3/4
B: 1/2
C: 1/8
D: 1/16
Pubali Bank Ltd #111

A number is selected at random from 40 to 59 inclusive . What is the probability that the number is prime number ?

A: 3/11
B: 3/10
C: 2/11
D: 1/5
First Security Islami Bank Ltd #112

A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times, each junior's name, 2 times, and each sophomore's, 1 time. What is the probability that a senior's name will be chosen?

A: 1/8
B: 2/9
C: 2/7
D: 3/8
City Bank Ltd #113

Certain number of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a girl hits a goal is 7/10 whereas the probability that a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?

A: 14/50
B: 7/50
C: 2/5
D: 2/25
Mutual Trust Bank Ltd #114

Certain numbers of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a gril hits a goal is 7/10 whereas the probability than a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?

A: 14/50
B: 7/50
C: 2/5
D: 2/25
Pubali Bank Ltd #115

Four subjects ---physics, Chemistry, Mathematics and Biology ---were taught in four consecutive periods of one hour each starting from 8.00 a.m. At what time was the chemistry period scheduled? 1. Mathematics period ended at 10.00 a.m, which was preceded by Biology. 2. Physics was scheduled in the last period. 3. Mathematics period was immediately followed by Chemistry.

A: Only 1
B: Only 2
C: Only 2 and 3
D: Only 1 and either 2 or 3
Sonali Bank Ltd #116

All possible three digit numbers are formed formes by 1, 2, 3 . If one number is chosen randomly, the probability that it would be divisible by 111 is____

A: 2/9
B: 1/3
C: 1/4
Shahjalal Islami Bank Ltd #117

When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?

A: T
B: U
C: V
D: Z
Government Job and Other Recruitment Exams #118

In a zoo, there are Rabbits and Pigeons. It heads are counted s, there are 200 and if legs are counted there are 580. How many pigeons are there ?

A: 90
B: 100
C: 110
D: 120
Government Job and Other Recruitment Exams #119

A bag contains 2 red, 3 green and 2 blue balls .Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

A: 5/7
B: 2/7
C: 10/21
D: 11/21
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