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?

১

In a cricket championship tournament, Team Dhaka has won 30 games out of 50 played. It has 45 more games to play. In order. In order to maintain an average of 80% victory rate, team Dhaka has to win how many games?

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

২

Mr. Bakhtiar works in the procurement department of a library. Under a new purchase policy, he increased the total number of books in the library by 20%. But soon afterwards, as part of the library cleaning process, 10% of the total library book stock is disposed of. What is the net change over the initial number of books in the library?

increased of 10%

increased of 30%

decreased of 8%

none of these

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

none of these

৩

The production cost of one unit of an item is Tk. 10. The item can be sold for a price of Tk. 16. The company further incurs a cost of Tk. 10,000 in the selling process. How many units of the product should be sold for the company to earn a profit of Tk. 50,000?

1667

8333

6000

10000

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

10000

৪

The ages of A and B are in the ratio of 8: 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?

3 : 2

8 : 7

10 : 7

11 : 8

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

11 : 8

৫

If A/2=B/3=C/4, then A: B: C=?

2 : 3 : 4

3 : 4 : 5

4 : 3 : 2

6 : 4 : 3

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

2 : 3 : 4

৬

A man's expenditure on food is 3/5 of his expenditure on clothes; find the ratio between his expenditure on food and cloth.

2 : 5

3 : 5

2 : 3

5 : 3

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

3 : 5

৭

A man walks down the road for half an hour at an average speed of 3 miles per hour. He waits 10 minutes for a bus, which him back to his starting point at 3: 15. If the man began his walk at 2: 25 the same afternoon, what was the average speed of the bus?

3 mph

4.5 mph

6 mph

9 mph

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

9 mph

৮

In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

1 : 4

1 : 3

1 : 2

2 : 3

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

1 : 2

৯

When a commodity is sold for Tk. 34.80, there is a loss of 2%. What is the cost price of the commodity?

Tk. 26.10

Tk. 43

Tk. 43.20

Tk. 46.40

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

Tk. 26.10

১০

In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg?

3:7

5:7

7:3

7:5

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

7:3

অনুসন্ধান করুন

বিস্তারিত সমাধান

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?

In a cricket championship tournament, Team Dhaka has won 30 games out of 50 played. It has 45 more games to play. In order. In order to maintain an average of 80% victory rate, team Dhaka has to win how many games?

The production cost of one unit of an item is Tk. 10. The item can be sold for a price of Tk. 16. The company further incurs a cost of Tk. 10,000 in the selling process. How many units of the product should be sold for the company to earn a profit of Tk. 50,000?

The ages of A and B are in the ratio of 8: 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?

If A/2=B/3=C/4, then A: B: C=?

A man's expenditure on food is 3/5 of his expenditure on clothes; find the ratio between his expenditure on food and cloth.

A man walks down the road for half an hour at an average speed of 3 miles per hour. He waits 10 minutes for a bus, which him back to his starting point at 3: 15. If the man began his walk at 2: 25 the same afternoon, what was the average speed of the bus?

In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

When a commodity is sold for Tk. 34.80, there is a loss of 2%. What is the cost price of the commodity?

In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg?

কোর্স

অনুসন্ধান করুন

বিস্তারিত সমাধান

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?

সম্পর্কিত বিষয় সমূহ

সম্পর্কিত অন্যান্য প্রশ্ন

In a cricket championship tournament, Team Dhaka has won 30 games out of 50 played. It has 45 more games to play. In order. In order to maintain an average of 80% victory rate, team Dhaka has to win how many games?

The production cost of one unit of an item is Tk. 10. The item can be sold for a price of Tk. 16. The company further incurs a cost of Tk. 10,000 in the selling process. How many units of the product should be sold for the company to earn a profit of Tk. 50,000?

The ages of A and B are in the ratio of 8: 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?

If A/2=B/3=C/4, then A: B: C=?

A man's expenditure on food is 3/5 of his expenditure on clothes; find the ratio between his expenditure on food and cloth.

A man walks down the road for half an hour at an average speed of 3 miles per hour. He waits 10 minutes for a bus, which him back to his starting point at 3: 15. If the man began his walk at 2: 25 the same afternoon, what was the average speed of the bus?

In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

When a commodity is sold for Tk. 34.80, there is a loss of 2%. What is the cost price of the commodity?

In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg?