Ah, what a happy little challenge! To get the number 13 using only the digits 1, 2, 3, and 4, you can add 1, 2, 3, and 4 together. That would give you 10, then you can add 3 to that to get 13. Just remember, there are no mistakes, only happy accidents in math!
Yes, as long as the two nonzero numbers are themselves rational. (Since a rational number is any number that can be expressed as the quotient of two rational numbers, or any number that can be written as a fraction using only rational numbers.) If one of the nonzero numbers is not rational, the quotient will most likely be irrational.
A prime number is a number which can only be divided by itself and 1. All even numbers are not prime numbers (except for 2) Only odd numbers, try dividing the number with a few possible other numbers, if you can't find any whole answers, than that number is a prime number.
no. 2 is the only even prime number. Prime numbers are numbers that only have two factors; one and itself. E.g. The number 7 only has two factors- 1x7=7. 2 is a factor of all even numbers, therefore no other even numbers are prime. They are composite. 2, however, is a prime number, as it's only factors are itself (2) and 1.
'0' is the only whole number that is not a counting number. Negative integers do not belong to whole numbers.
By the uniqueness of numbers, the only number for 1234 is 1234 itself.
17 = (4+2)*3 - 1
4 dvided by 2 minus 1 times 3
To calculate the number of 4-number combinations using the numbers 1, 2, 3, 4, and 5 without repetition, you can use the formula for permutations. Since order matters in a combination, you would use the formula for permutations, which is nPr = n! / (n - r)!. In this case, you would have 5 choices for the first number, 4 choices for the second number, 3 choices for the third number, and 2 choices for the fourth number. Therefore, the total number of 4-number combinations would be 5P4 = 5! / (5-4)! = 5 x 4 x 3 x 2 = 120 combinations.
3*(2+4)-1 = 17
4*4*2+2*3
It can be: 2*3+4+1 = 11
(1+4) x (2 x 3)
How about: 2*(1+3+4) = 16
2^(4+1)-3
18 = (4 × 3) + (2 × 1)
2x4x3 is 24+1 is 25, x4 is 100. 2x3 is 6+4 is 10. 10*100 is 1000. That is one way. All ways require using the numbers more than once