The HCF and LCM of two numbers is 6 and 5040 respectively. If one of the numbers is 210, then the other number is:

256 144 216 266

144

⇒ LCM × HCF = Product of two numbers ⇒ 5040 × 6 = 210 × 2nd number ⇒ 2nd no. = \(\frac{5040\;×\;6}{210}\) = 144