(Paper) Class X Maths (Arithmetic Progression)
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Arithmetic Progression
1. Which of the following sequences are A.P.S? Write down their common
difference.(a) 5, 10, 15, 20, 25.....
(b) 2, 2, 2, 2, 2.......
(c) 2, 4, 8, 16, 32......
(d) 1/5 1/10 1/15 1/20......
2. Write next two terms of given A.P.
(a) -3, -5, -7, -9......
3. Find 10
th term of given A.P. 10, 20, 30, 40....4. Find 20
th term of A.P. Whose first term = 10, C.D = 35. Find n, if the given value of x is n
th term of A.P.17, 22, 27, 32,....; x = 267
6. Find T
20 T15 for the A. P. 3, 14, 25, 36...7. Third term of an A.P. is 21 and the eighth term is 56.Find A.P. and also
find its eleventh term.8. 3 times the tenth term is equal to 5 times the twentieth term. Find
twentieth term.9. Find the sum 2+4+6+....+202
10. Write sequence with n
th term 5+2 n. Find sum of first 20 terms.11. Find sum of first 20 terms of the sequence whose n
th term is an = 3+2n/312. Find sum of all natural numbers between 1 and 98 which are multiples of 6.
13. How many
terms of the series must be added to get sum 55
15, 13, 11, 9,..
14. Sum of terms of A.P. is 36 and product is 1296. Find A.P.
Each Q 3 marks