Teachoo Quiz

10 Question MCQ (including Assertion)

Chapter 8 Class 11 Sequences and Series | 10 questions | about 8 minutes

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Question 1 of 10
Question 1 of 10

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

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Question 2 of 10

A lighting display has \(32\) bulbs in its first row. Every succeeding row contains \(50\%\) more bulbs than the preceding row. According to this pattern, the sixth row contains

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Question 3 of 10
Which term of the G.P. \(1/3, 1/9, 1/27, \dots\) is \(1/19683\)?
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Question 4 of 10

The value of \(\displaystyle \sum_{k=1}^{5}(2k-1)\) is

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Question 5 of 10

A sheet of paper is \(0.1\) mm thick. If its thickness doubles with every fold, its theoretical thickness after \(12\) folds is

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Question 6 of 10

An online course has \(1000\) subscribers. Its subscriber count grows by \(20\%\) every month. What is the least number of complete months after which the subscriber count exceeds \(2000\)?

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Question 7 of 10
The product of 3 consecutive terms of a G.P. is 216 and their sum is 19. Find the possible terms.
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Question 8 of 10
Let \(S\) be the sum, \(P\) the product, and \(R\) the sum of reciprocals of \(n\) terms in a G.P. Which of the following relations is correct?
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Question 9 of 10

A person sends a message to \(3\) people. Each recipient forwards it to \(3\) new people, and this continues in the same manner. How many people in total receive the message during the first \(6\) forwarding stages?

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Question 10 of 10
If A.M. and G.M. of two positive numbers are 10 and 8 respectively, the numbers are:
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