Question

Which of the following ( 15, 20, 4, 3 (ii) 7, 4, 21, 12 are in proportion.​

Answer 1

Answer:

Approach: If four numbers a, b, c and d are in proportion then a:b = c:d. The solution is to sort the four numbers and pair up the first 2 together and the last 2 together and check their ratios this is because, in order for them to be in proportion, the product of means has to be equal to the product of extremes.01

Answer 2

Answer:

they are not divisible

Step-by-step explanation: