There are 30 socks in a drawer. 60% of the socks are red and the rest are blue. What is the minimum number of socks that must be taken from the drawer without looking in order to be certain that at least two red socks have been chosen?
A. 2
B. 14
C. 18
D. 20
JUIBA (Unit-G)Set-2মানসিক দক্ষতা(IQ)গাণিতিক সমস্যাIQ-4 (Topic Practice)JU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
B.
14
Explanation:
Related Questions (Any University/Year)
- If List A consists of (1, 3, 5, and 7) and List B consists of (2, 4, 6, and 8), for how many different ordered pairs, (x, y), where x is a number from List A and y is a number from List B, is x + y >11?
- 6,9,15,18 দৈর্ঘ্য বিশিষ্ট সরলরেখা দ্বারা কয়টি ত্রিভুজ গঠন করা যাবে?
- In a recent survey among 362 BBA students of IBA, 281 students responded that they watch IPL or English Premier League or both. If 97 of these students do not watch IPL and a total of 204 students watch English Premier League, how many of these students watch both?
- If Tk. 45,000 was invested in share when the price per share was TK. 90 and TK. 30,000 was invested when the price per share was TK. 60, what was the average price per share purchased ?
- Rima bought four books that cost Tk. 6.00 each and two books that cost Tk. 3.00 each. What is the average cost of the six books?
- কয়েকজন বন্ধু পিকনিকে যাওয়ার সিদ্ধান্ত নিয়েছিল এবং খাওয়ার জন্য ৯৬০ টাকা খরচ করার পরিকল্পনা করেছিল। তাদের মধ্যে চারজন না যাওয়াতে। বাকিদের প্রত্যেককে অতিরিক্ত ৪০ টাকা করে চাঁদা দিতে হয়েছে। পিকনিকে যারা অংশ নিয়েছিল তাদের সংখ্যা ছিল-
- Point B is on the line segment AC. Which of the following is always true?
- A colony of 15,000 ants increased by 50% after being fed. Then after 4 weeks without food, the number of ants dropped by 60%. What percentage decline did the original population undergo?
- Hisham can now purchase 5 more apples with Tk. 75 because of reduction in price by 20%.Calculate the previous price of one dozen of apples.
- X হচ্ছে একটি ধনাত্মক সংখ্যা। যখন X+1 কে ৬ দ্বারা ভাগ করা হয় তখন অবশিষ্ট থাকে ৫। X কে ?? দ্বারা ভাগ করলে অবশিষ্ট থাকে-
- There is 50% chance that Rafiq will go to a fast food restaurant for lunch and 50% chance that he will skip lunch. If he goes to a fast food restaurant there is 60% chance that he will take only a sandwich and nothing else. If he decides not to take a sandwich he will take a burger of a chicken pie. What is the probability that he will take a burger?
- There are 50 students enrolled in Business Studies. Of the enrolled students 90% took the final exam. Two-thirds of the students who took the final exam passed the final exam. How many students passed the final exam?
- If (1/ x) + (5 / y )= 4/3 and x=3y then y=?
- A car going 40 miles per hour set up on an 80 miles trip at 9.00 A.M. Exactly 10 minutes latter, a second car left from the same place and followed the same route, How far in miles per hour, was the second car going if it caught up with the first car at 10:30 A.M.?
- In a certain class \(\frac{1}{2}\) of the male and \(\frac{2}{3}\) of the female students speak English. If there are \(\frac{3}{4}\) as many females as males in the class, what fraction of the entire class speaks English?
- There were n books in a store. After 1/6th of the books were sold and 5 more books were procured, the total number of books in the shop stood at 65. What was the original number of books in the shop?
- A room at Zaber Hotel International can accommodate 4 people. The rate is 3900 one person and Tk. X for each additional people. If 3 people take the room for one night and pays Tk. 2100 per person, what is the value of X?
- An employee can choose one of two methods of annual payment either an annual salary of Tk. 35,000 with no commission or an annual salary of Tk. 10,000 plus a 20% commission on her annual sales. What must be her total annual sales to get the same annual payment in either method?
- ৫০ জন ছাত্রের গড় CGPA ৪.৬০ এবং ৪০ জন ছাত্রীর গড় CGPA ৪.৭২। এই ৯০ জন ছাত্র-ছাত্রীর গড় CGPA কত?
- If y% of x is 29 what is the value of x?
- An absent minded scientist walks on an escalator at a rate of 4 steps per second and reaches the other end in 15 seconds. While coming back, walking at the same speed he reaches the starting point in 45 seconds. What is the number of steps on the escalator?
- Approximately what percent of Class X students play Table Tennis out of the total Class X students playing the different given games ?
- What percent of 50 is 15?
- A can complete a project in 20 days and B can complete the same project in 30 days. If A and B start working on the project together and A quits 10 days before the project is completed, in how many days will the project be completed?
- A dishonest milkman professes to sell his milk at cost price but he mixes it with water and there by gains 25% . The percentage of water in the mixture is:
- কঃখ =৩ঃ৫, খঃগ =৪ঃ৭, হলে, কঃগ = কত?
- Rashid deposits Tk. 1200 from his salary in the first month. In every subsequent month, he deposit Tk. 100 more than the amount deposit in the previous month. What will be the total amount of his deposit in 18 months?
- Approximately what percent of Class VII students play Cricket out of the total students playing Cricket ?
- A manufacturer prints books at a cost of Tk. x each for the first thousand copies printed. The second thousand copies printed cost Tk. 0.9x each. If it costs Tk.3,264 to print 1,400 copies of a book, then x is:
- The average of 5 numbers is 40. If 2 more numbers, with an average of 21, are added to these numbers, what will be the average of the combined 7 numbers?
- The sum of three digits of a number is 10, The middle digit is equal to the sum of other two, and the number will be increased by 99 if the first and third digits be interchanged. What is the original number?
- If the product of two numbers is 10 and sum of the two numbers is 7, which is the larger of the two numbers?
- Six men can earn as much as eight women, two women can earn as much as three boys and four boys can earn as much as five girls. If a girl can earn Tk. 50 a day, what amount can a man earn in a day?
- The population of City X is 40% percent of the population of City Y. The population of City X is what percent of the total population of city X and City y together?
- একটি আয়াতাকার ঘরের দৈর্ঘ্য বিস্তারের দ্বিগুণ। এর ক্ষেত্রফল ৫১২ বর্গমিটার হলে পরিসীমা কত মিটার?
- A shoe seller sold one pair of shoes for 20 taka. The buyer did not have change and gave the seller a 100 taka note. The seller took taka 100 change since he had none in his cash box from a neighbor businessman and returned the buyer required change plus the shoe he bought. Moments later after the client had left the seller found that he was given a fake note. What was the amount of loss for the seller?
- A woman was 30 years old when her daughter was born. Her age is now 6 years more than three times her daughter's age. How old will be the daughter in 10 years?
- A vendor sells 5 lemons for a taka, to make 40% profit. How many lemons did he buy for a taka?
- নিচের ছবিতে ভারসাম্য রক্ষার জন্য কত ওজনের প্রয়োজন?
- The ratio of marbles owned by X and Y is 8:3. If X gives 8 marbles to Y, the ratio becomes 6:5. How many marbles does X have?
