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Ross
Rafa
ProfessorThe number that doesn't belong in the sequence is 123. The pattern among the other numbers is that they are all prime numbers, specifically 3, 31, and 27 (which is a prime cube). However, 123 is not a Prime number as it can be divided by 3 and 41.
27 doesn't belong because it rounds up and all the other numbers round down.
31 or 123
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What two numbers have the sum of 123 but the difference of 7?
Suppose the smaller number is x, then the bigger number is x+7 Their sum is 123 ie x + (x+7) = 123 or 2x + 7 = 123 or 2x = 123 - 7 = 116 so that x = 58 and then x+7 = 65 The two numbers are 58 and 65
One number is 8 more than twice the second number The sum of the numbers is 123 Find the numbers?
Let a be the first number and b the second number then, (1) a = 8 + 2b and (2) a + b =123 From (2) a = 123 - b substituting for a in (1) gives :- 123 - b = 8 + 2b , 3b = 115, b = 115/3 = 38⅓. and substituting for this in (2) gives :- a + 38⅓ = 123, a = 123 - 38⅓ = 84⅔. So, a = 84⅔ and b = 38⅓
3x3 magic square using positive and negative numbers?
123 123 123
The sum of three consecutive whole numbers is 123. what are the numbers?
First number: x Second: x+1 Third: x+2 x + x+1 + x+2 = 123, 3x + 3 = 123 x + 1 = 41 x = 40 x + 2 = 42 The numbers are: 40, 41, 42.
The sum of three consecutive numbers is 123. What is the smallest number. Write an equation and solve?
Let x be the smallest number to be solved:x + (x+1) + (x+2) = 1233x + 3 = 1233x = 123 - 3 = 120x = 120 / 3 = 40 is the smallest numberand 40 + 41 + 42 = 123
