Chat with our AI personalities
The digit with which a multiple of 4 ends depends on the last digit of the other factor. If the last digit is a zero, the product ends with zero; if the last digit is a 1, the product ends with 4; etc. The only options for the last digit of the product are 0, 2, 4, 6, 8.
You can look at the last digit. If the lest digit of a whole number is even, the number is even.
The 5147th triangular number ends in 8.
Any number that ends in 0 or 5 and has three digits.
Any 3 digit number that ends with a "0." 100, 110, 120 and 130.