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Q: What number is halfway between 15.8 and 21.8?

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abc = 158

376-218=158

218 is an even number, not odd!

218 is the mass number of the isotope polonium-218.

That would be Exit 218 on I-35 which is right at the Blackwell - Tonkawa Municipal Airport.

a number.

218 = two hundred eighteen.

It is: 894-218 = 676

All Factors of 218:1, 2, 109, 218

The number 218 is spelled "two hundred eighteen."

109average:= (28 + 190)/2= 218/2= 109

In the expression polonium-218, 218 is the mass number (sum of protons and neutrons in the atomic nucleus of an isotope); polonium-218 (or 218Po) is an isotope of polonium.

The product of the prime factors of 218 is 218. The prime factors of 218 are 2 and 109, making their product 2 x 109 = 218! I wouldn't expect it to be otherwise: the product of the prime factors of a number equal the number.

The isotopic mass, rounded to the nearest integer.

It is 218 plus 100 = 318

The number is 1.

As an even number greater than 2, 218 is divisible by 2 and therefore composite. Its positive integer factors are: 1, 2, 109, 218

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6,682

109

218

218Po (or polonium 218) is an isotope of polonium; 218 is the mass number of this isotope. The exact mass is: 218,0089730(26); the half life of this isotope is 3,10(1) minutes.

318

218

218 miles