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Question
In a cafetaria, donuts are arranged in the following pattern. How many donuts will be there in the seventh stack?
In a cafetaria, donuts are arranged in the following pattern. How many donuts will be there in the seventh stack?
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Solution
The correct option is D 20
The given sequence is 50, 45, 40, 35.
It is a decreasing pattern.
Difference between the first and the second terms = 50 - 45 = 5
Difference between the second and the third terms = 45 - 40 =5
Therefore, the next terms in the sequence are 35 - 5 = 30;
30 - 5 = 25; 25 - 5 = 20
Hence, 20 donuts will be there in the seventh stack.
The given sequence is 50, 45, 40, 35.
It is a decreasing pattern.
Difference between the first and the second terms = 50 - 45 = 5
Difference between the second and the third terms = 45 - 40 =5
Therefore, the next terms in the sequence are 35 - 5 = 30;
30 - 5 = 25; 25 - 5 = 20
Hence, 20 donuts will be there in the seventh stack.
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