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If the number x4584 is divisible by 11, what is the value of x?
A4
B3
C2
D5
Answer & Solution
Correct answer: B. 3
1. Divisibility by 11: difference of sums of alternate digits is a multiple of 11.
2. For x4584: (x + 5 + 4) − (4 + 8) = (x + 9) − 12 = x − 3.
3. x − 3 = 0 gives x = 3.
_Source: RRB Group D CEN-02/2018 PYQ, Q.38._
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