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 ...
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The multiples of 25 are 25, 50, 75, 100, 125, etc. Excluding multiples of 50 (50, 100, etc.), examples include 25, 75, and 125. These numbers are divisible by 25 but not 50. Class 6 NCERT Ganita Prakash Chapter 5 Prime ...
‘Idli’ is said 300 times, ‘vada’ 180 times, and ‘idli-vada’ 60 times. These counts correspond to multiples of 3, 5, and both 3 and 5 (LCM 15) up to 900. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics Chapter 5 ...
Yes, Guna is correct. Any two prime numbers are co-prime because their only common factor is 1. For example, 3 and 5, or 11 and 17, share no divisors other than 1. Class 6 Mathematics Ganita Prakash Prime Time Class 6 Mathematics ...
343 is not divisible by 17. The prime factorization of 343 is 7³ while 17 is a prime number. Since 17 is not a factor of 343, the two numbers are not divisible. Class 6 Mathematics Ganita Prakash Prime Time Class 6 ...
Yes. Other primes satisfying the condition are: 5 → 2 × 5 + 1 = 11 (prime). 11 → 2 × 11 + 1 = 23 (prime). 13 → 2 × 13 + 1 = 27 (prime). class 6 Mathematics Textbook ...
False. A product of two or more prime numbers is composite, not prime. A prime number has exactly two divisors, but the product of primes has additional divisors, including the prime factors themselves. Class 6 Mathematics Chapter 5 Prime Time question ...