Short Quiz

Question 1 of 5

A student saves ₹\(100\) in the first month and doubles the amount saved every following month. The total amount saved in \(8\) months is

A ₹\(12{,}800\) B ₹\(15{,}400\) C ₹\(25{,}600\) D ₹\(25{,}500\)

Select one option. Answers are shown after the test.

Question 2 of 5

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

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

Select one option. Answers are shown after the test.

Question 3 of 5

Which of the following sequences is a geometric progression?

A \(2,5,8,11,\ldots\) B \(1,4,9,16,\ldots\) C \(2,4,7,14,\ldots\) D \(3,-6,12,-24,\ldots\)

Select one option. Answers are shown after the test.

Question 4 of 5

A radioactive sample has a mass of \(640\) mg and its mass becomes half every \(6\) hours. Its mass after \(30\) hours is

A \(10\) mg B \(16\) mg C \(40\) mg D \(20\) mg

Select one option. Answers are shown after the test.

Question 5 of 5

In a G.P., the fourth term is \(54\) and the seventh term is \(1458\). The tenth term is

A \(13122\) B \(19683\) C \(39366\) D \(59049\)

Select one option. Answers are shown after the test.

Class 6