Skip to main content

Probability Test-CBSE CLASS 12TH sample QUESTIONS WITH ANSWERS

Probability Test

1) One number is drawn from numbers 1 to 150. Find the probability that it is either divisible by 3 or 5.
2) What is the probability that a letter selected at random in an English book is a vowel.
3) A number was drawn at random from the number 1 to 50. What is the probability that it will be a multiple of 2 or 3 or 10.
4) Suppose that it is 11 to 5 against a person A, who is 38 years of age living till he is 73 and 5 to 3 against a person B now 43 living till he is 78 years. Find the probability that both will die 35 years, hence.
5) A candidate is interviewed for the 3 posts. For the first post, there are 3 candidates, for the second post, there are 4 and for third there are 2. What are the chances that he will get selected?

6) Four cards are drawn without replacement. What is the probability that they are all aces?
7) Find the probability of 53 Sundays in a year selected at random.
8) Two unbiased dice are thrown. Find the probability that both dice show the same number.
9) An urn contains 7 green and 5 red balls. Two balls are drawn at a time. Find the probability that both are of same color.
10) What is the probability of drawing a heart or a king from a pack of cards?
11) A coin is tossed 3 times what is the probability of getting all three heads.
12) A bag contains 4 red, 3 white and 5 blue balls. Two balls are drawn one after another with replacement. Find the prob. That first is red and other is blue.
13) Find the probability of getting 6 at least once in six throws with a single dice.
14) The probability that a boy will get a scholarship is .90 and that girl will get is .80. what is the prob that atleast one of them will get the scholarship?
15) A bag has 5 white and 4 blue balls and 4 balls are drawn successively and not replaced. What is the chance that white and blue will appear alternatively.
16) A speaks truth in 80% cases , B in 90% cases. In what percentage of cases they are likely to contradict each other.
17) Find the probability 53 Fridays in a year selected at random.
18) A single letter selected from the word “PROBABILITY” is a vowel.

19) What is the probability that the sum will be 8 if two dice are tossed.

20) A card is drawn from pack. Find the probability that card is king, a queen or a jack or a card of spade.
21) A bag has 7 white, 5 red and 8 blue balls. Find the probability of balls being white if two are drawn at random.
22) What is the probability of getting a number greater than 4 with an ordinary dice?

23) In a single throw of 2 dice. Find the prob. Of throwing at least 8.
24) What is the probability that vowel selected at random in any English book is an “i.
25) A card is drawn from a pack of cards. Find the prob. That it is king or queen.












ANSWERS
26) 7/15
27) 5/26
28) 33/50
29) 55/128
30) ¾
31) 1/270725
32) 5/28.
33) 1/6
34) 31/66.
35) 4/13
36) 1/8
37) 5/36
38) 1 – (5/6)6
39) 0.98.
40) 5/63
41) 26%
42) 5/28.
43) 4/11
44) 5/36.
45) 11/36
46) 21/190
47) 1/3.
48) 5/12
49) 1/5
50) 8/52.

Comments

Popular posts from this blog

The Missing Mail | Class IX - Interact in English

NCERT / CBSE Literature Reader for English Course (Communicative) Important Exercise Questions Q.3: (a) Why is Ramanujam worried about getting his daughter married? Give four reasons. (b) How does the postman console and guide Ramanujam and his family during each of the instances you have listed in 3 (a)? Ans 3(a): Ramanujam is worried as he could not find a suitable match to marry his daughter off which was getting delayed because of different reasons. The four causes of his worriedness are - (i) Sometimes horoscopes did not match, (ii) Sometimes the girl’s appearance were not approved, (iii) At times there were problems of too much dowry and other financial matters, (iv) The season was closing with only three more auspicious dates left, whereas, he was not able to finalise any alliance by that time. Ans 3(b): First instance - When Ramanujam said that horoscopes did not agree Thanappa consoled and guided him by saying that he should not utter inauspicious words and when the God wills ...

The Tribute - Multiple Choice Questions

Question (1):   What does the word 'petite' mean? 1. strong 2. small 3. neat 4. clean Ans:   2 Question (2):   What was almost a routine affair for Babuli during his student days? 1. working in the city 2. writing to his elder brother 3. going home in the rickety bus 4. reading big books Ans:   3 Question (3):   What was written in the elder brother's letter? 1. That they were missing him in the village 2. That there was to be a partition 3. That there was a festival 4. That he would get money Ans:   2 Question (4):   How many days were left for the partition? 1. A week 2. A month 3. A day 4. Three days Ans:   1 Question (5):   How much money was expected for Babuli's land? 1. Seven thousand 2. Twenty thousand 3. Ten thousand 4. Forty thousand Ans:   2 Question (6):   What makes Babuli think of the butcher? 1. Hunger 2. Wife's heartlessness 3. The i...

ENGLISH (Communicative) Sample Question Paper 5

Sample Paper – 2009 Class – XSubject – ENGLISH (Communicative) General instructions: The paper consist of FOUR sections: SECTION A (READING) - 20 Marks SECTION B (WRITING) - 30 Marks SECTION C (GRAMMAR) - 20 Marks SECTION D (LITERATURE) - 30 Marks Attempt all the questions. Do not write anything on the question paper. All the answers must be correctly numbered as in the question paper. And written in the answer sheets provided to you. Attempt all questions in each section before going on to the next section. Read each question carefully and follow the instructions. Strictly adhere to the word limit given with each question. Marks will be deducted for exceeding the word limit. SECTION A (READING) – 20 MARKS A1. Read the following passage and answer the following questions: [12] THE TUITION TRAP 1. Given the general awareness of the woeful condition of our State sch...