Start learning →

The smallest 8-digit number written using only the digits 2 and 5 is:

A2,22,22,222
B2,22,22,225
C5,22,22,222
D2,52,52,525
Answer & Solution
Correct answer: A. 2,22,22,222
Using the smaller digit 2 in every place gives the least value, 2,22,22,222.
Practise this question with Quill — Olympiad (Class 5) →

Keep practising Knowing Our Numbers

Browse all Knowing Our Numbers questions for Olympiad (Class 5), or explore more Mathematics topics.

Start a Knowing Our Numbers lesson →
Related questions
The Roman numeral MCMXLIV stands for which year?Which of these is NOT a standard subtractive Roman pair?Which Roman numeral stands for 2,421?The Roman numeral for 1,009 is:What is the largest number that standard Roman numerals can write?Which number is written MCMXC in Roman numerals?What number does the Roman numeral XLIX stand for?Ten crore is written in the short scale as: