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Ask QuestionPosted by Minu Kumari 6 years, 9 months ago
- 1 answers
Gaurav Seth 6 years, 9 months ago
Let the unit digit be x and ten's digit be y .
So, Number will be 10y + x .
After, reversing the digits, number = 10x +y.
Now,
As per the question,
10y+x - (10x+y ) = 9
=> 10y + x -10x - y = 9
=> 9y-9x = 9
=> 9(y-x) = 9
=> y- x = 1......(i)
Again,
x+ y = 15.......(ii)
By solving (i) and (ii) ,
2y = 16, y = 8.
And, x = 7.
Thus, Number will be 87.
And, product of the digits will be 56.
Posted by Mohit Singh 6 years, 9 months ago
- 2 answers
Posted by Vrushabh Bendigeri 6 years, 9 months ago
- 1 answers
Posted by Arjun Dalal 6 years, 9 months ago
- 1 answers
Posted by Arsheen Mushtaq 6 years, 9 months ago
- 1 answers
Pranjal Mujumdar 6 years, 9 months ago
Posted by Raj Chauhan 6 years, 9 months ago
- 1 answers
Posted by Priyanshi Patnare 6 years, 9 months ago
- 4 answers
Posted by Dyjfkchx Xufifigog 6 years, 9 months ago
- 0 answers
Posted by Manisha Verma 6 years, 9 months ago
- 2 answers
Yogita Ingle 6 years, 9 months ago
No, rational numbers are not closed under division. For example, let us take two rational numbers 2 and 0. Now, 2 / 0 is not defined. As division of two rational numbers 2 and 0 is not a rational number, so division of two rational number is not closed.
Posted by Vaishnav Mp 6 years, 9 months ago
- 0 answers
Posted by Tanisha Motwani 6 years, 9 months ago
- 1 answers
Yogita Ingle 6 years, 9 months ago
Closure property: For two rational numbers say x and y the results of addition, subtraction and multiplication operations gives a rational number. We can say that rational numbers are closed under addition, subtraction and multiplication.
Commutative law: For rational numbers, addition and multiplication are commutative.
Commutative law of addition: a+b = b+a
Commutative law of multiplication: a×b = b×a
Associative law: Rational numbers follow the associative property for addition and multiplication.
Suppose x, y and z are rational then for addition: x+(y+z)=(x+y)+z
For multiplication: x(yz)=(xy)z.
Posted by Samriti Sharma 6 years, 9 months ago
- 1 answers
Vardhini Suresh Babu 6 years, 9 months ago
Posted by Dilip Das 6 years, 9 months ago
- 8 answers
Posted by Apurba Gour 6 years, 9 months ago
- 2 answers
Gaurav Seth 6 years, 9 months ago
Take the help from the similar sum
Question:
In how much time will a sum of money double itself at 20% per annum simple interest ?
Answer:
Let principal be x
rate=20 %
amount =2x
simple interest =2x-x =x
SI = P*R*T/100
x= x*20*T/100
x= T x/5
5x = Tx
T = 5x/x
T= 5
Time = 5 years
Posted by Irumankulam Thergu Street Sankarankovil R 6 years, 9 months ago
- 6 answers
Gaurav Seth 6 years, 9 months ago
Infinite.
You can write an infinite number of rational number between any two rational numbers.
EG: Let us consider 2 and 2.1
The numbers between them maybe:
2.01, 2.001, 2.0001, 2.00001, 2.000001, 2.003430342, 2.034342243….. and so on
So an infinite number of possibilities exists
Posted by Parth Hagare 6 years, 9 months ago
- 0 answers
Posted by Piyush Mandhare 6 years, 9 months ago
- 2 answers
Posted by Riddhima Agarwal 6 years, 9 months ago
- 1 answers
Posted by Ejoumale7576 Ejoumale7576 6 years, 9 months ago
- 0 answers
Posted by Tarani Balaji 6 years, 9 months ago
- 1 answers
Sia ? 6 years, 9 months ago
{tex}x = \frac 43\times \frac12 = \frac 23{/tex}
Posted by Pathan Rashid 6 years, 9 months ago
- 1 answers
Posted by Pathan Rashid 6 years, 9 months ago
- 0 answers
Posted by Akash Khinda 6 years, 9 months ago
- 1 answers
Priti Sharma 6 years, 9 months ago
Posted by Neha Verma 6 years, 9 months ago
- 0 answers
Posted by Lakshmi Anvitha Bhupathi 6 years, 9 months ago
- 1 answers
Rohith Vk 6 years, 9 months ago
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