A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ?

Number System
A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ?

80/153

80/150

80/152

80/151

80/153

80/150

80/152

80/151

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System
A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is:

24

30

22

27

24

30

22

27

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System
The sum of two numbers is 25 and their difference is 13. Find their product.

104

315

325

114

104

315

325

114

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

12

28

180

160

12

28

180

160

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System
In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ?

17 litre

25 litre

21 litre

29 litre

17 litre

25 litre

21 litre

29 litre

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System
There are seven boys and four girls in a row. In how many ways can they be seated in the row so that all the girls do not sit together ?

11! - 7! x 4!

11! - 8! x 3!

10! - 7! x 3!

11! - 8! x 4!

11! - 7! x 4!

11! - 8! x 3!

10! - 7! x 3!

11! - 8! x 4!

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number System

Number System A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ?

Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is:

Number System The sum of two numbers is 25 and their difference is 13. Find their product.

Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

Number System In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ?

Number System There are seven boys and four girls in a row. In how many ways can they be seated in the row so that all the girls do not sit together ?

Number System
A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ?

Number System
A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is:

Number System
The sum of two numbers is 25 and their difference is 13. Find their product.

Number System
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

Number System
In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ?

Number System
There are seven boys and four girls in a row. In how many ways can they be seated in the row so that all the girls do not sit together ?