...so the number is 10 less than 16. Can you work it out now...?
Both 21 and 42 will work. ■
both 27 and 28 when squared will work
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Start with 1000 and work back, rejecting any composites that you find.
1st odd number . . . 1 (1 less than double 1)2nd odd number . . . 3 (1 less than double 2)3rd odd number . . . 5 (1 less than double 3)4th odd number . . . 7 (1 less than double 4)5th odd number . . . 9 (1 less than double 5)Are you seeing a pattern yet ?6th odd number . . . 11 (1 less than double 6)7th odd number . . . 13 (1 less than double 7)...Qth odd number . . . . (1 less than double Q)
25 percent of 45 = 45*0.25 = 11.25 11.25 < (is less than) 45
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the square root of 223 is less than 15, so we only need to test its divisibility by 2,3,5,7,11 and 13. If you try dividing by any of these you do not get a whole number, so 223 is a prime.
...so the number is 10 less than 16. Can you work it out now...?
Both 21 and 42 will work. ■
both 27 and 28 when squared will work
Whether fractions work better than decimals or less as well is very much a question of your preference.
No. Even if you manage to get it to work, it will be excruciatingly slow.
Usually, employers do not require a doctor's note for less than three days of absense, but they can. If you think you may need a note at your job, you should ask your supervisor.
No. For example, 5 divided by 0.5 is equal to 10. In general, assuming you work with positive numbers only, if you divide by a number GREATER than one, the result will be less than the original number; if you divide by a number LESS than one, the result will be larger than the original number.
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