40 and 231 are co-prime. The prime factorization of 40 is 2³ × 5 and 231 = 3 × 7 × 11. Since they share no common factors, they are co-prime. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics Chapter ...
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The smallest number is 2 × 3² × 7 = 126. Multiplying these primes in increasing order ensures the smallest number containing exactly the specified prime factors. Class 6 NCERT Ganita Prakash Chapter 5 Prime Time class 6 Mathematics Textbook Chapter 5 ...
Leap years are those divisible by 4 but not by 100, unless also divisible by 400. For someone born in 2000, the leap years include 2004, 2008, 2012, 2016, 2020, and 2024. Class 6 Mathematics Chapter 5 Prime Time question answer Class ...
The two numbers are 8 and 5. Divisibility by 8 confirms divisibility by 2 and 4. Divisibility by 5 ensures divisibility by 10. Hence, checking these two guarantees divisibility by all. Class 6 NCERT Ganita Prakash Chapter 5 Prime Time class 6 ...
There are 25 prime numbers between 1 and 100. These include all numbers that have exactly two divisors: 1 and themselves. Examples are 2, 3, 5, 7, 11, 13, and so on. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics ...