What is the probability that product of two integers (not necessarily different integers ) randomly selected from the numbers 1 to 20, inclusive , is odd ?
A. 1/3
B. 1/4
C. 1/2
D. 1/5
সঠিক উত্তরঃ
B.
1/4
Explanation:
Related Questions (Any University/Year)
- A man's age is now 3 times his son's age. Eight years back, the man's age was 5 times his son's age. what is the present age of the son?
- A worker was hired for 7 days. Each day, he was paid Tk. 10 more than what he was paid for the previous day of work. The total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his starting pay?
- What is 1 percent of 0.025 ?
- The next number in the sequence , 3, 6 m 11, 18, 27, .... is
- A and B together can paint a wall in 3 days . A can do it alone in 5 days . How many days would it take B to do this job alone ?
- ১০০ গজ লম্বা একটি সড়কের উভয় পার্শ্বে ১৫ ফুট অন্তর বৃক্ষ চারার প্রয়োজন ?
- A rope of 40 feet long is cut into two pieces. If one piece is 18 feet longer than the other, what is the length, in feet, of the shorter piece?
- what is the maximum number of 3 *3 squares that can be formed from the squares in the 6* 6 checker board to the right?
- If the sides of a square increase by 10%,how much will the area be increased in percentage ?
- সমাধান করুনঃ x/2+y/3=1,x/3+y/2=1
- 110০ সম্পূরককোণ কত?
- A man purchased equal number of banans at two different rates one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that , he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?
- একজন মালিক তার দুইজন কর্মচারী ’ক’ ও ‘খ’ কে সপ্তাহে ৫৫০ টাকা এমনভাবে দেয় যেন ‘ক’ যে টাকা পায় তা ‘খ’ এর টাকার চাইতে ১২০% বেশি। ‘খ’ সপ্তাহে কত টাকা পায়?
- If the average of 4, 5, 6 and P is 7, what is the value of P?
- A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when drives on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and then 50 miles on the highway?
- এক ফল বিক্রেতার মোট ফলের ১৬ অংশ লিচু , ১৮ অংশ আম, ১৪ অংশ কলা এবং ৬৬ টি কমলা ছিল। ফল বিক্রতার মোট কতগুলো ফল ছিল?
- The compound interest at 10% per annum on certain amount of money for two years is Tk. 10.50. What is the principal amount in Tk.?
- A water tank is two-fifth full. Pipe A can fill a tank on 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely ?
- রম্বসের ক্ষেত্রফল কত ?
- A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?
- At what rate of compound interest per annum will a sum of Tk. 1200 become Tk. 1348.32 in 2 years?
- A painter has painted 1/3 of a rectangular wall that is 12 feet high. When he will paint another 50 square feet of the wall he will have finished 50% of the job. What is the length of the wall?
- লঞ্চ ও স্রোতের গতিবেগ যথাক্রমে ঘণ্টায় ১৫ কিমি ও ৫ কিমি। নদী পথে ৪০ কিমি দূরত্ব অতিক্রম করে পুনরায় যথাস্থানে ফিরে আসতে সময় লাগবে---
- If product of two sequential positive odd numbers is 255, what are those numbers ?
- The rent of a quest house if Tk. 50 per day for the first three days Tk. 100 per day for the next 5 days and Tk. 300 per day for to the days . The registration fee in the beginning in Tk. 50 . If one has to pay Tk. 1300 for how many days has her availed this facility?