They would be 10, 20, 30, and 40
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10 ,20 ,30 ,40 ,50
15 prime numbers are between 0 and 50
The are: 6, 12, 18, 24.
ten to eight7:50 + 0:20 = 8:10
Generally, when spelt out in words in English, you hyphenate the numbers between 20 and 99 which have digits other than 0 in the units column - for example, twenty-one, twenty-two, twenty-three.... ninety-eight, ninety-nine.