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Fasi

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Questions

The following questions were asked by visitors named Fasi.

In an arithmetic series, the sum of the 5th to the 8th terms inclusive is 114, whilst the sum of the 12th to 15th terms inclusive is 198. What is the 21st term? I have got 99=2a +3d and 57= 2a+3d Im not sure what to do now
10 years ago
An iodoalkane A, with a molecular mass of 198, contains 30.3% carbon and 5.6% hydrogen by mass. It reacts with aqueous sodium hydroxide solution to give an alcohol which can be oxidised and with ethanolic potassium hydroxide solution to give two alkenes,...
10 years ago
In aquiz 75 student passed sscience or maths.if 10 passed both and 15 more passed science than maths fine the number of students who passed in maths only, science only, maths and science, only one subject.
2 years ago

Answers

The following answers were posted by visitors named Fasi.

Sqrt(2d/ai)
9 years ago
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