Which of the following numbers is not divisible by 88?
1058
A number is divisible by 88 only if it is divisible by both 8 and 11, since \(88 = 8 \times 11\).
Check 1232: \(1232 \div 88 = 14\), an exact quotient, so it is divisible.
Check 1144: \(1144 \div 88 = 13\), an exact quotient, so it is divisible.
Check 968: \(968 \div 88 = 11\), an exact quotient, so it is divisible.
Check 1058: \(1058 \div 88 = 12.02...\), not a whole number, so 1058 is not divisible by 88.
Hence, the number not divisible by 88 is 1058.
If the number 6484a6 is divisible by 8, then find the least value of a.