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Earn +20 ptsQ: How many 1 ' s are there in digits from 1 to 100?
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Arrange the digits 112233 as a 6-digit numberIn this 6-digit number the 1's are separated by 1 digitthe 2's by 2 digits and the 3's by 3 digits?
312132 or 231213
How many different positive integers can be formed if the first digit must be 2 the last digit cannot be 0 and digits may be repeated?
1 x 10 x 10 x 10 x 9 = 9000 1 = it must be 2 10's = any digits 9 = any digit BUT zero
How many 4 are in 100?
100 divided by 4 = 25. There are 25 4's in 100.
How many 3 8's are in 1?
2.3 recurring
Round to the nearest thousand?
Do you have a number you want to round? Look at the 100's digit ( the second to the left of the decimal point). If it is 5 or more, add 1 to the thousands digit (the next one to the left). Now replace the tens and units digits with zeros (and drop any numbers after the decimal point).
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