Natural numbers, place value, divisibility, HCF and LCM.
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Q1 · Natural Numbers and Number System · MEDIUM
A number has exactly 4 factors. If one of its factors is 7, which of the following could be the number? A. 14 B. 21 C. 49 D. 35
Q2 · Natural Numbers and Number System · EASY
What is the place value of 5 in the number 3,52,417? A. 5 B. 50 C. 500 D. 50,000
Q3 · Natural Numbers and Number System · EASY
What is the sum of the first 15 natural numbers?
Q4 · Natural Numbers and Number System · MEDIUM
How many prime numbers are there between 30 and 50?