Question

WHAT MUST BE ADDED TO NUMBERS 1,3,10,18 SO YHAT ARE IN PROPORTION?

Answer 1

Answer:

we have to add 2

Step-by-step explanation:

1+2=3

3+2=5

10+2=12

18+2=20

now

3,5,12,20=

3/5=12/20

3×20=5×12

60=60

therefore

2 must be added to 1 3 10 18

so that

3 5 12 and 20 are in proportion

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