What is the least value that must be assigned to A so that the 8-digit number 109A7760 is divisible by 16?
0
A number is divisible by 16 when the number formed by its last four digits is divisible by 16.
In 109A7760 the last four digits are 7760, and 7760 ÷ 16 = 485, so the number is divisible by 16 whatever the digit A is.
The least value of A is therefore 0.
Hence, the answer is 0.
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