Question
If the 4-digit number p89q is exactly divisible by 9, what
is the least value of (p + q)?Solution
ATQ,
The sum of digits = p+8+9+q = p+q+17
For divisibility by 9, p + q + 17 should be a multiple of 9.
The smallest value of p + q that satisfies this condition is 1.
Thus, least value of (p + q) = 1..
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