NCERT Solutions for Class 10 Maths | Chapter: Real Numbers | Concept: Prime Factorization of positive integers
Question 1: Express each number as a product of its prime factors:
i. 140
ii. 156
iii. 3825
iv. 5005
v. 7429
Explanatory Answer
i. 140
140 = 7 × 5 × 2 × 2
140 = 7 × 5 × 22
ii. 156
156 = 2 × 2 × 3 × 13
156 = 22 × 3 × 13
iii. 3825
3825 = 3 × 3 × 5 × 5 × 17
3825 = 32 × 52 × 17
iv. 5005
5005 = 5 × 7 × 11 × 13
v. 7429
7429 = 17 × 19 × 23