It is the unit's digit of the product of the unit's digits.
For example, the units digit of 123456 * 4689
is simply the units digit of 6*9 = 54, which is 4.
Find the units digit of 8*7. The 30 in 38 will have no effect on the units digit.
The unit's digit in 7100 is a 1
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
84.42 or 42.21
Power 2: units digit 9. Multiply by 49 again to get power 4: units digit 1. So every 4th power gives units digit 1. So 16th power has units digit 1, so the previous power, the 15th must have units digit 3.
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.
Find the units digit of 8*7. The 30 in 38 will have no effect on the units digit.
24
The unit's digit in 7100 is a 1
The units digit of 20132013 is the same as the units digit of 32013. The units digit of 34 = units digit of 81 = 1 So units digit of 32013 = 32012+1 = 34*503+1 = 34*503 *31 = 1503*3 = 3
The units digit of a whole number is always the rightmost digit.
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
42.21 or 84.42
84.42 or 42.21
Power 2: units digit 9. Multiply by 49 again to get power 4: units digit 1. So every 4th power gives units digit 1. So 16th power has units digit 1, so the previous power, the 15th must have units digit 3.
The digit in the units column of the number 7157 is 7.
The number in the units digit of the number 921 is 9.