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What five digit number adding a 1 on the end is 3 times bigger when you have the original 5 digit number with 1 at the start?
13213
What is the probability that a random 2-digit number 00-99 does not end in 5?
It is 1/10.
Choose the number below that represents the digit in the tens place of the number 184?
number 8 (without decimals, the second number from the end is always in the ten's place)
If 5 is a factor of a number what is the probability that the ones digit of the number is 5?
If 5 is a factor of a number, it means the number is divisible by 5. For the ones digit of the number to be 5, the number must end in 5. Since there are 10 possible digits (0-9), and only one of those digits is 5, the probability of the ones digit being 5 is 1 out of 10, or 1/10.
What are all the 4 digit combinations with 0-9?
Method 1: four digit number start after 999 and end at 9999so 4 digit no. = 9999-999 = 9000method 2: - - - - there are four places in 4 digit no. In first place only 1-9 can come , for rest 0-10so total no. = 9*10*10*10=9000* * * * *Wrong!Those are the number of PERMUTATIONS, not combinations. In a combination, the order of digits does not matter. So 1234 is the same as 1342 or 4213 etc.
