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When the digits of a three digit number are reversed?
Remark: The difference of a 3-digit number and the number formed by reversing the digits is exactly divisible by 99 and the quotient so obtained is either the difference between the hundredth digit and the ones digit of the original 3-digit number or 0.
How many three digit multiples of 18 have the sum of the digits also equal 18?
25 three-digit multiples of 18 have the sum of the digits which also equal 18.
What is it called when a number is reversed?
A palindromic number (also known as a numeral palindrome or a numeric palindrome) is a number (such as 16461) that remains the same when its digits are reversed. The term palindromic is derived from palindrome, which refers to a word (such as rotor or racecar) whose spelling is unchanged when its letters are reversed.
How do you write numbers in reverse order?
Write a program in C to display the number in reverse order.
- Pictorial Presentation:
- Sample Solution:
- C Code: #include void main(){ int num,r,sum=0,t; printf(“Input a number: “); scanf(“%d”,&num); for(t=num;num!=0;num=num/10){ r=num % 10; sum=sum*10+r; } printf(“The number in reverse order is : %d \n”,sum); }
What are the three digit multiples of 18?
Here are some 3-digit multiples of 18 having the sum of digits also equal to 18: 198, 288, 378, 396, 468, 486, 558, 576, 594, 648, 666, 684, 738, 756, 774, 792, 828, 846, 864, 918, 936, 954, 972, 990. Answer.
How do you find multiples of 18?
The list of multiples of 18 are: 18,36,54,72,90,108,126,144,162,180,198,216,234,252,270,…. Sometimes multiples are misunderstood as factors also, which is not correct. Factors of 18 consist of only those numbers which are multiplied together to get the original number….Multiples of 18
- 54÷18 = 3.
- 126÷18 = 7.
- 180 ÷ 18 = 10.
What must be added to 3209 to get a number whose digits are reversed of the given number?
Hence, the required number is 99.