A collector has 120 movie posters and 100 band posters she wants to sell 24 movie posters but still have her poster collection m
1 answer:
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Here, we may use Geometric Progression
The sequence follows as:
27, 18,12,...
The first term (a)= 27
27/18 = 18/12
common ratio = 1.5
Let fourth term be x
Therefore , 12/x = 1.5
=> x= 12/1.5 = 8
Answer:
True
Step-by-step explanation:
Permutation is act of arranging members of a set while combination is selection of the items from collection.
The number of permutation of r object out of n is:
The number of combinations of r object out of n is:
Or,
So, number of the permutations of r objects out of n is greater than number of the combinations of r objects out of n.