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Playing with Numbers — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSPlaying with Numbers1 Mark
MCQ
Mark $(\checkmark)$ against the correct answer: If $x48y$ is exactly divisible by $9$ then the least value of $(x + y)$is:
  • A
    $4$
  • B
    $0$
  • ✓
    $6$
  • D
    $7$
✓

Answer

Correct option: C.
$6$
When a number is divisible by $9,$ the sum of digits is also divisible by $9.$
$x + 4 + 8 + y = 12 +(x + y)$
For $12 + (x + y)$ to be divisible by $9:$
$12 + (x + y) = 18$
$⇒ (x + y) = 6$

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