Test Preparation on Mathematics Olympiad Class-7 Test Prep-9

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1. How many times does the number 3 occur in unit’s place for numbers ranging from 1 to 100?

Numbers ranging from 1 to 100, number ‘3’ occurs in unit’s place in following numbers:
3, 13, 23, 33, 43, 53, 63, 73, 83, 93

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