If the number 123k578 is divisible by 11, then what is the value of k?
Question and options
If the number 123k578 is divisible by 11, then what is the value of k?
- 8
- 4
- 2
- 0
Answer and explanation
Correct answer: A - 8
Alternating digit sum from the right: 8-7+5-k+3-2+1 = 8-k, must be a multiple of 11 for a digit k, so k = 8.
Practice for these exams
-
IIM Bangalore BBA DBE Entrance Test
Related question papers
Related exam syllabi
More solved explanations in Number series & simplification
- If the mean of \(a\), \(b\), and \(c\) is \(M\); \(ab + bc + ca = 0\); and the mean of \(a^2\), \(b^2\) and \(c^2\) is \(KM^2\), then \(K\) is equal to
- In the following number series, one number is wrong. Find the incorrect number 2, 6, 24, 96, 285, 568, 567
- (729 × 15625)^(1/3) =
- Square root of 225:
- In the following sequence, the missing term is- 2/3, 4/7, ?, 11/21, 16/31