Short Quiz

Question 1 of 5

The sum of the first six terms of \(3+6+12+\cdots\) is

A \(96\) B \(126\) C \(186\) D \(189\)

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Question 2 of 5

The sum \(81-27+9-3+1\) is

A \(61\) B \(60\) C \(63\) D \(81\)

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Question 3 of 5

If \(a_n=(-1)^{n-1}n^2\), then \(a_6\) is

A \(-36\) B \(36\) C \(-25\) D \(25\)

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Question 4 of 5

The first four terms of the sequence whose \(n^{\text{th}}\) term is \(a_n=3n-2\) are

A \(1,4,7,10\) B \(3,6,9,12\) C \(2,5,8,11\) D \(-1,2,5,8\)

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Question 5 of 5

If the fifth, eighth and eleventh terms of a G.P. are \(p,q,s\), respectively, then

A \(p^2=qs\) B \(s^2=pq\) C \(q^2=ps\) D \(pq=qs\)

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Class 6