The second term of this sequence is 20 and the third term is 50.
The rule for finding the next term in this sequence is to subtract y then multiply by 5.
Find the value of y and work out the first term of this sequence.
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since it is given that its second term of the sequence is 20 and the third term is 50
And also it is given that we can find the next term by subtracting Y from the preceding term and then multiplying it by 5 so, applying this we find the value of y is equal to 10
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