The next logical number in the series comprised of 16, 26, 21, 31, __ is 26. The difference between 16 and 26 is 10, the difference between 26 and 21 is -5, and the difference between 21 and 31 is again 10.
Continue ReadingLogically, the next number differs from 31 by -5, so the answer is 26. A number sequence is a set of limited numbers with a relationship of some sort to which one must come up with the missing number. Number sequences often appear as problems on standardized tests. Arithmetic and geometric sequences are most frequently seen, but many sequences fall into neither category.
Learn more about NumbersAn endless number of digits are in pi. It is an irrational number, which means it cannot be expressed as the ratio of any two integers. Furthermore, it was proved in 1882 that pi is not the root of an algebraic equation that has rational factors.
Full Answer >There are 90,000 different number combinations that can be made in a five-digit number if numbers can repeat. To determine the number of possibilities, each place digit has to be evaluated independently to see how many numbers could fit there and then all are multiplied together.
Full Answer >The Roman numeral equivalent of the number 16 is XVI. The Roman numeral system uses letters to represent numbers. When a letter of lesser or equal value follows a letter, the values are added.
Full Answer >The prime factorization of 72 is 2^{3x} 3^{2}, or 2 x 2 x 2 x 3 x 3. The prime factorization of a number involves determining the factors of a number that are also prime numbers and multiply together to equal the original number.
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