9+8+7+65+4+3+2+1=99
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99 is an odd number. Even numbers are evenly divisible by two, while odd numbers are not.
If you use 6 plus signs, here's what you'll get: 9 + 8 + 7 + 6 + 5 + 43 + 21= 99
To find the answer to 987654321 that equals 99 using only addition, you can break down the number into its individual digits: 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45. To reach 99, you would need to add 54 more. One way to do this is to add 50 and 4: 50 + 4 = 54. Therefore, the answer is 987654321 + 50 + 4 = 987654375.
The median of the numbers is equal to the number in the middle when all are arranged in numerical order. In this case, the median number is 99.
99 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.