The prime numbers from 21 to 30 are 23 and 29, totaling 2. Composite numbers are 21, 22, 24, 25, 26, 27, 28, and 30, making 8 in total for this range. class 6 Mathematics Textbook Chapter 5 question answer class 6 ...
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The smallest number is 2520, the least common multiple (LCM) of 1 to 10. This is calculated using the prime factorizations of these numbers, ensuring it is divisible by all integers in this range. class 6 Mathematics Textbook Chapter 5 question ...
The factors of 35 are 1, 5, 7, and 35. The factors of 50 are 1, 2, 5, 10, 25, and 50. Their only common factors are 1 and 5. Class 6 NCERT Ganita Prakash Chapter 5 Prime Time class 6 Mathematics ...
‘Idli’ is said for multiples of 3 (30 times), ‘vada’ for multiples of 5 (18 times), and ‘idli-vada’ for multiples of both (6 times). Total repetitions depend on overlaps. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics Chapter 5 Prime ...
The three prime numbers are 5, 13, and 29. Their product 5 × 13 × 29 = 1955 satisfies the condition. All three numbers are prime and less than 30. Class 6 Mathematics Chapter 5 Prime Time question answer Class 6 NCERT ...
999 is divisible by 99. The prime factorization of 999 is 3³ x 37 while 99 is 3² × 11. Since 99’s factors are included in 999’s, it confirms divisibility. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics Chapter 5 ...
96 is divisible by 24. The prime factorization of 96 is 2⁵ × 3, and 24 is 2³ ×3. All prime factors of 24 are included in 96’s factorization, confirming divisibility. class 6 Mathematics Textbook Chapter 5 question answer class 6 Mathematics ...
You can form six numbers: 245, 254, 425, 452, 524, and 542. Among these, only 425 and 245 are primes. The others are divisible by 2 or 5, disqualifying them. Class 6 NCERT Ganita Prakash Chapter 5 Prime Time class 6 Mathematics ...
The numbers 105 and 330 are products of exactly three distinct prime numbers. Their factorizations are: 105 = 3 × 5 × 7, 330 = 2 × 3 × 5 × 11 (distinct count: 3). Class 6 NCERT Ganita Prakash Chapter ...
True. A prime number’s units digit cannot be 4 because numbers ending in 4 are divisible by 2, making them even. All even numbers other than 2 are composite, disqualifying them from being prime. Class 6 Mathematics Chapter 5 Prime Time ...