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Number System — MATHS STD 6 — Question

Gujarat BoardEnglish MediumSTD 6MATHSNumber System1 Mark
MCQ
Mark $(\checkmark)$ against the correct answer:
How many $8$-digit numbers are there?
  • A
    $99999999$
  • B
    $89999999$
  • ✓
    $90000000$
  • D
    None of these.
✓

Answer

Correct option: C.
$90000000$
The largest eight-digit number $= 99999999$
The smallest eight-digit number$ = 10000000$
Total number of eight-digit numbers $= (99999999 - 10000000) + 1$
$= 89999999 + 1$
$= 90000000$

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