Explanation:
the highest or greatest or largest common factor is the product of the prime factors the numbers have in common :
540 ÷ 2 = 270
270 ÷ 2 = 135
135 ÷ 2 no
135 ÷ 3 = 45
45 ÷ 3 = 15
15 ÷ 3 = 5
5 ÷ 3 no
5 ÷ 5 = 1
540 = 2² × 3³ × 5¹
360 ÷ 2 = 180
180 ÷ 2 = 90
90 ÷ 2 = 45
45 ÷ 2 no
45 ÷ 3 = 15
15 ÷ 3 = 5
5 ÷ 3 no
5 ÷ 5 = 1
360 = 2³ × 3² × 5¹
so, the HCF = 2² × 3² × 5¹ = 4×9×5 = 180
(1)
to satisfy the condition max. 180 visitors can be invited.
(2)
540 / 180 = 3
so, every visitor can receive 3 pieces of chicken.
and 360 / 180 = 2 cups of drink.