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Q: Can you make 24 using only numbers 9 12 7 5?

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Assuming that the only permitted operation is addition, then there are 4 combinations.

5 + 7 + (6 x √4) = 12 + (6 x 2) = 12 + 12 = 24

12+5+5+1

7+5=12 2-9=3 3x3=9

(5+7)*(5-3)=12*2=24

No. By adding 4+4+4 the answer comes to 12. To subtract the answer comes to 4. By multiplying it is 64.

2x2x3 = 12

(5-2)*4 = 12

Impossible, as there are not enough numbers to cover all squares.

One example. 12*8+3+7-6 = 100 The key is finding sets of 10s

You can make 12 different numbers.

2025.25

You can make 4*3*2/2 = 12 numbers.

You cannot! Answer dated: 13 January 2012

12 ÷ (3 - 5/2) = 12 ÷ 1/2 = 24

6x2=12 12+8=20 20+4=24

26 = 64 combinations, including the null combination - which contains no numbers.

Since there is only one square of 12 (= 144) there is not much of a pattern.

12 + 24 * 6/18 = 12 + 24 *1/3 = 12 + 8 = 20

12

2025.25

The LCM of the given two numbers using prime factorization is 36

Prime numbers are the numbers that can only be divided by 1 and them selves. As in 13 if you were to factor it using only whole numbers you would see that its factors are only 1 and 13. There for it is prime. While 12 you see that the factors are 1,2,3,4,6,12 meaning that it is not prime.You test several numbers, to see whether they are prime numbers, until you find a prime number.

7+9+10-6-8

The only way I know how to do it is 12+13=25, 6 divided by 6=1, and 25-1=24