Neither 39 nor 27272 is prime. 39 can be divided by 3 and 27272 can be divided by 2. They both have at least one factor besides 1 and the number themselves. They are composite. The digit in 39 that is prime is 3. The digit in 27272 that is prime is 7.
A 5-digit combination can be obtained as:five 1-digit numbers from 1-9,three 1-digit numbers from 1-9 and one 2-digit number from 10-39, orone 1-digit number from 1-9 and two 2-digit numbers from 10-39.There are 9C5 = 126 of the first kind,9C3*30C1 = 84*30 = 2520 of the second, and 9C1*30C2 = 9*435 = 3915 of the third.All together, there are 126 + 2520 + 3915 = 6561 5-digit combinations.
2 digit number
0
The units digit of 159*445*7762*39 is the units digit of the product of the units digits of the four numbers, that is, the units digit of 9*5*2*9 Since there is a 5 and a 2 in that, the units digit is 0.
Neither 39 nor 27272 is prime. 39 can be divided by 3 and 27272 can be divided by 2. They both have at least one factor besides 1 and the number themselves. They are composite. The digit in 39 that is prime is 3. The digit in 27272 that is prime is 7.
one hundred undecillion
A 5-digit combination can be obtained as:five 1-digit numbers from 1-9,three 1-digit numbers from 1-9 and one 2-digit number from 10-39, orone 1-digit number from 1-9 and two 2-digit numbers from 10-39.There are 9C5 = 126 of the first kind,9C3*30C1 = 84*30 = 2520 of the second, and 9C1*30C2 = 9*435 = 3915 of the third.All together, there are 126 + 2520 + 3915 = 6561 5-digit combinations.
How many four digit combinations can be made from the number nine? Example, 1+1+2+5=9.
No. When adding the smallest 2 digit number (= 10) to the smallest 2 digit number (again, 10) the result is a 2 digit number (10 + 10 = 20). When adding the largest 2 digit number (= 99) to the largest 2 digit number (again, 99) the result is a 3 digit number (99 + 99 = 198). As you can see, you'll either get a 2 or 3 digit number, but never a 4 digit number.
2 digit number
0
10 is the smallest 2 digit number.
The units digit of 159*445*7762*39 is the units digit of the product of the units digits of the four numbers, that is, the units digit of 9*5*2*9 Since there is a 5 and a 2 in that, the units digit is 0.
3 x 13 = 39
Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.
This first digit is the first number. In this case the first digit is the number 2.