0
simple... its impossible! :)
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∙ 14y ago
Daniela Marie Lago
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How many numbers are there between 100 and 1000 which have exactly one of their digits as 7?
I ask you... Call it 100 - 999 so that we have exactly 900 numbers. The first digit of a number x from this range can be any of nine digits (1-9). The second two places can be filled by any of ten digits (0-9). Therefore the probablility that only the first digit is a 7 is 1/9 x 9/10 x 9/10 = 81/900. The probability that only the second digit is a 7: 8/9 x 1/10 x 9/10 = 72/900 The probability that only the third digit is a 7: 8/9 x 9/10 x 1/10 = 72/900 Adding the three mutually exclusive probabilities gives an overall proportion of 225/900, so with 900 numbers in the range there must be 225 with the digit 7 occurring only once. ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") "() "() "() "() "() "() "() "() "() "() No it is not
How many three digits are positive integers there whose digits are 2 or 5?
8. A way to work this out is figure out how many possible digits can go in each place value position (units, tens, hundreds) and multiply these together. Since there are 2 possible digits that can go in each position and there are three positions, you would go: 2 x 2 x 2 = 8 Want a list? 222 225 252 255 555 552 525 522
How do you get the answer of -225-6?
-225 - 6 = -225 + (-6) = -231
How do you simplify radical 225?
√225 = 15
What is 25 x 9?
225
What 3 numbers equals 225?
There is only one number that equals 225. The number is 225.
What times itself equals 225?
15 times 15 equals 225.
What is 15 times 15 equals?
225
What is 16 percent of 225 equals?
16% of 225= 16% * 225= 0.16 * 225= 36
Log 225 to the 2 power equals 3.456?
log10(225)2 equals 5.5327625985087111
A square number a 3 digit number the product of its digits is 20 What is the number?
225 = (15)2 2*2*5=20 3 digits in 225
What is g-500 equals 225?
775-500=225
What times 5 equals 225?
45*5 = 225
What multiplied what equals 225?
9 times 25 = 225
What minus 500 equals 225?
225 + 500 = 725
What times 16 equals 225?
225/16 = 14.0625
What is 225 plus 860 equals?
225 + 860 = 1085
