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What is 31 percent of 345?
A percent means a hundredth part - Thus:- Divide 354 by 100. This gives you the value for 1%. Then multiply the 1% value by 31 to give you the value of 31%. (345/100)*31 = 106.95
What are the factors and prime factors of 4123?
4123: factors = 1, 19, 31, 217, 133, 4123 prime factors = 7, 19, 31
What is the prime number between 20 and 90 that end in 1?
31 41 61 71
How would you add together 31 plus 19 in two different ways and 31 minus 19 in two different ways showing all four calculations entirely in Roman numerals?
The modern way of expressing 19 into Roman numerals is now XIX but the ancient Romans would have probably worked out the above calculations as follows: A: XXXI+IXX = L => 31+(20-1) = 50. B: XXXI+XVIIII = L => 31+19 = 50. C: XXXI-IXX = XII => 31-(20-1) = 12. D: XXXI-XVIIII = XII => 31-19 = 12.
What is XC in Roman numerals?
In the Roman numeric system, symbols are given value. When a smaller value symbol proceeds a higher value symbol, then the smaller value symbol is subtracted from the high value symbol. In this case XC is equal to 90 (X =10, C = 100. So XC equals 100 - 10 or 90). The symbols that hold numeric are I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000.
