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If the average of these four numbers is 21 find the missing number from 12 18 28?

23


If the average of these four numbers are 21 find the missing number the numbers are 12 18 28 and?

The Answer is 26


What is the missing number 10 15 28?

To find the missing number in the sequence 10, 15, 28, we can look for a pattern in the differences between the numbers. The difference between 10 and 15 is 5, and the difference between 15 and 28 is 13. If we assume a pattern in the differences, the missing number could be 21, which fits as the average of 15 and 28. Thus, the sequence could be 10, 15, 21, 28.


What is the LCM of 12 21 and 28?

LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.


What are the composite number by 28 21 17?

21 and 28 are composite.


Is 8 an abundant number or a deficient number?

It is a deficient number. The first abundant number is 12. 12: 1,2,3,4,6,12 which equal 28 28>(12*2) and the abundance is 28-(12*2)=4


How many number can go into 84?

12: 1 2 3 4 6 7 12 14 21 28 42 84.


What are all the whole number factors of 84?

They are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42 and 84.


What are the number factors of 84?

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42. 84.


What is 35percent of a number if 12 is 15percent of that number?

28 is the answer. if 12 is 15% of a number ,the number is 80. 35% of 80 is 28


Which number goes into 21 and 28?

When figuring out what number goes both into 21 and 28, you should look at the factor paris. 21: 1 x 21, 3 x 7 28: 1, 28, 2 x 14, 4 x 7 7 goes into both 21 and 28.


What number increased by -12 is 28?

x + (-12) = 28 So x = 28 + 12 = 40