Three pairs of prime numbers under 20 with sums as multiples of 5 are: (2, 3), (7, 13), and (11, 19). Their sums are 5, 20, and 30, respectively, all divisible by 5. Class 6 Mathematics Ganita Prakash Prime Time Class 6 ...
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No, 2 is the only even prime number. All other even numbers are divisible by 2, making them composite. Prime numbers have only two divisors, 1 and themselves, which excludes all other even numbers. Class 6 Mathematics Ganita Prakash Prime Time Class ...
The numbers 7 and 8 satisfy the condition. Their least common multiple (LCM) is 56, which exceeds 50. Both numbers are under 10 and their LCM is calculated as (7 × 8 ÷ 1). Class 6 NCERT Ganita Prakash Chapter 5 ...
The multiples of 40 in this range are 320, 360, and 400. These numbers are calculated by identifying integers divisible by 40 within the interval (310 < x ≤ 410). Class 6 Mathematics Chapter 5 Prime Time question answer Class 6 NCERT ...
‘Idli Vada’ is said for multiples of both 3 and 5 (LCM = 15). The 10th such multiple is 15 × 10 = 150. Thus, Idli Vada is said at 150. Class 6 Mathematics Chapter 5 Prime Time question answer Class 6 ...
The prime numbers are 5, 13, and 29. Their product 5 × 13 × 29 = 19555 confirms this. Each factor is a prime number below 30, meeting the condition. Class 6 Mathematics Chapter 5 Prime Time question answer Class 6 NCERT ...
(30, 45): Not co-prime (GCD = 15). (57, 85): Co-prime (GCD = 1). (121, 1331): Not co-prime (GCD = 11). (343, 216): Co-prime (GCD = 1). class 6 Mathematics Textbook Chapter 5 question answer class 6 Mathematics Chapter 5 Prime Time solutions
False. Prime numbers have exactly two factors: 1 and the number itself. For instance, 7 has only two factors: 1 and 7, which is what defines it as a prime number. Class 6 Mathematics Chapter 5 Prime Time question answer Class 6 ...