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2 + 3 = 5; 7 + 13 = 20; 3 + 17 = 20; 2 + 13 = 15; 5 + 5 = 10 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
2 + 3 = 5; 7 + 13 = 20; 3 + 17 = 20; 2 + 13 = 15; 5 + 5 = 10
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
(a) 21 = 3 + 7 + 11 (b) 31 = 3 + 11 + 17 (c) 53 = 13 + 17 + 23 (d) 61 = 19 + 29 + 13 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
(a) 21 = 3 + 7 + 11 (b) 31 = 3 + 11 + 17 (c) 53 = 13 + 17 + 23 (d) 61 = 19 + 29 + 13
Seven consecutive composite numbers: 90, 91, 92, 93, 94, 95, 96 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
Seven consecutive composite numbers: 90, 91, 92, 93, 94, 95, 96
(a) 23 and (c) 37 are prime numbers. https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
(a) 23 and (c) 37 are prime numbers.
3 and 5; 5 and 7; 11 and 13 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
3 and 5; 5 and 7; 11 and 13
Write five pairs of prime numbers less than 20 whose sum is divisible by 5. [Hint: 3 + 7 = 10]
2 + 3 = 5; 7 + 13 = 20; 3 + 17 = 20; 2 + 13 = 15; 5 + 5 = 10 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
2 + 3 = 5;
7 + 13 = 20;
3 + 17 = 20;
2 + 13 = 15;
5 + 5 = 10
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
See lessExpress each of the following numbers as the sum of three odd primes:(a) 21 (b) 31 (c) 53 (d) 61
(a) 21 = 3 + 7 + 11 (b) 31 = 3 + 11 + 17 (c) 53 = 13 + 17 + 23 (d) 61 = 19 + 29 + 13 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
(a) 21 = 3 + 7 + 11
(b) 31 = 3 + 11 + 17
(c) 53 = 13 + 17 + 23
(d) 61 = 19 + 29 + 13
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
See lessWrite seven consecutive composite numbers less than 100 so that there is no prime number between them.
Seven consecutive composite numbers: 90, 91, 92, 93, 94, 95, 96 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
Seven consecutive composite numbers:
90, 91, 92, 93, 94, 95, 96
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
See lessWhich of the following numbers are prime: (a) 23 (b) 51 (c) 37 (d) 26
(a) 23 and (c) 37 are prime numbers. https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
(a) 23 and (c) 37 are prime numbers.
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
See lessGive three pairs of prime numbers whose difference is 2. [Remark: Two prime numbers whose difference is 2 are called twin primes.]
3 and 5; 5 and 7; 11 and 13 https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
3 and 5; 5 and 7; 11 and 13
https://www.tiwariacademy.com/ncert-solutions/class-6/maths/chapter-3/
See less