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Class 10 Maths Practice Test: Sum of N Terms of Arithmetic Progression
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Avg score: 67% • Most missed: “The sum of first 20 terms of the AP 10, 12, 14, 16, 18…. is _________”

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Class 10 Maths Practice Test: Sum of N Terms of Arithmetic Progression
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11 Questions

1. The sum of 50 + 100 + 150 + 200 + …….. + 1000 is _________
2. What will be the sum of all natural numbers lying between 500 and 5000, which are divisible by 17?
3. The sum of n terms of an AP in which first term is a, common difference is d and last term is l, is Sn = \(\frac {n}{2}\)(a + l).
4. What will be the sum of all 3-digit even positive numbers?
5. If the sum of first n terms of an AP is given by Sn = 4n2 + 6, then its first term will be _________
6. The sum of all 2 – digit numbers divisible by 19 will be __________
7. The sum of first 20 terms of the AP 10, 12, 14, 16, 18…. is _________
8. The sum of the first 10 terms of an AP is the same as the sum of its first 5 terms, then the sum of its 15th term will be _______
9. The nth term if an AP is 5n + 2, then the sum of first n terms of the AP will be __________
10. How many terms of the AP 5,10,15,20….. must be added to get a sum of 330?
11. The sum of the first 12 terms of an AP is 15 and the sum of its first 15 terms is 12, then the sum of its first 27 terms will be __________

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