JEE MATHS UNIT 6
QUIZ NO 3
TOTAL QUESTIONS = 20


1. The sum of the first n terms of an arithmetic progression is given by


2. The nth term of a geometric progression is given by


3. The sum of the first n natural numbers is given by


4. The sum of the first n terms of the series 2 + 4 + 6 + ... is


5. The harmonic mean of 8 and 16 is


6. If the sum of an infinite geometric series is 9 and the first term is 3, the common ratio is


7. The sum of the squares of the first n natural numbers is


8. The arithmetic mean of 12 and 18 is


9. If the nth term of a sequence is given by a_n = 3n + 1, the sequence is


10. The number of terms in the sequence 4, 8, 12, ..., 40 is


11. The sum of an infinite geometric series with a = 5 and r = 1/2 is


12. The nth term of the sequence 2, 5, 8, 11, ... is


13. If the sum of the first 10 terms of an arithmetic progression is 155 and the first term is 5, the common difference is


14. The geometric mean between 3 and 27 is


15. The nth term of the harmonic progression corresponding to an arithmetic progression is


16. The sum of the first n terms of the series 1 + 4 + 9 + 16 + ... is given by


17. The sum of the first n terms of the series 1 + 1/2 + 1/4 + 1/8 + ... is


18. If the product of three consecutive terms of a geometric progression is 64 and the terms are in ascending order, the terms are


19. The sum of the cubes of the first n natural numbers is given by


20. If the sum of the first 20 terms of an arithmetic progression is 400 and the first term is 5, the common difference is



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