30,25,15,20, or 10.
63
It is not clear what the question means: there are 31 2-digit numbers that can be expressed as a sum of two squares.
Two-digit prime numbers whose digits add up to 10 are:193773
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
30,25,15,20, or 10.
63
It is not clear what the question means: there are 31 2-digit numbers that can be expressed as a sum of two squares.
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
#include<conio.h> #include<stdio.h> void main() { int num,digit=0,counter; printf("Enter 10 Numbers"); for(counter=0;counter<10;counter++); { scanf("%d",&num); digit=digit+num); } printf("The Sum of 10 Numbers is %d",digit); getch(); }
10; 888, 798, 789, 978, 879, 996, 969, 699
Two-digit prime numbers whose digits add up to 10 are:193773
The smallest two-digit composite number is 10, which is the product of 2 and 5. The largest two-digit composite number is 99, which is the product of 3 and 33. To find the sum of the smallest and largest two-digit composite numbers, we add 10 and 99, resulting in 109.
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
For a 2-digit prime number (which are all odd) to be the sum of two prime numbers, one of the prime numbers will have to be 2. That means the difference between the sum and the other addend will have to be 2. Prime numbers that differ by 2 are called twin primes. There are six pairs of 2-digit twin primes. Your numbers are 13, 19, 31, 43, 61 and 73.
the right answer is 10 cause there is o,1,2,3,4,5,6,7,8,9 so there 10 numbers in total which have 1 digit
There are 90 two-digit numbers... starting with 10 and ending with 99.