2. Which term of the AP 3, 8, 13, 18, \dots is 78?A) 15thB) 16thC) 17thD) 18th✓ Correct Answer: Option B
4. The 11th term of an AP is 38 and the 16th term is 73. Find its 31st term.A) 178B) 158C) 198D) 168✓ Correct Answer: Option A
5. An AP consists of 50 terms of which the 3rd term is 12 and the last term is 106. Find the 29th term.A) 60B) 62C) 64D) 66✓ Correct Answer: Option C
6. If the 3rd and 9th terms of an AP are 4 and -8 respectively, which term of this AP is zero?A) 4thB) 5thC) 6thD) 7th✓ Correct Answer: Option B
7. Find the sum of first 22 terms of an AP in which d = 7 and the 22nd term is 149.A) 1661B) 1641C) 1616D) 1681✓ Correct Answer: Option A
9. The sum of the first n terms of an AP is given by $S_n = 3n^2 + 5n$. Find its 16th term.A) 95B) 98C) 102D) 105✓ Correct Answer: Option B
10. In an AP, if d = -4, n = 7, and the n-th term $a_n = 4$, then the value of the first term a is:A) 20B) 24C) 28D) 32✓ Correct Answer: Option C
11. The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms.A) 14B) 16C) 18D) 20✓ Correct Answer: Option B
12. If 7 times the 7th term of an AP is equal to 11 times its 11th term, then its 18th term will be:A) 0B) 1C) -1D) 18✓ Correct Answer: Option A
13. Which term of the AP 121, 117, 113, \dots is its first negative term?A) 31stB) 32ndC) 33rdD) 34th✓ Correct Answer: Option B
14. Determine the first term of the AP whose 3rd term is 16 and the 7th term exceeds the 5th term by 12.A) 2B) 4C) 6D) 8✓ Correct Answer: Option B
15. The sum of the 4th and 8th terms of an AP is 24 and the sum of the 6th and 10th terms is 44. Find the first term of the AP.A) -13B) -10C) -15D) -8✓ Correct Answer: Option A
16. Find the sum of first 51 terms of an AP whose second and third terms are 14 and 18 respectively.A) 5610B) 5600C) 5710D) 5810✓ Correct Answer: Option A
17. How many terms of the AP 9, 17, 25, \dots must be taken to give a sum of 636?A) 10B) 11C) 12D) 13✓ Correct Answer: Option C
18. If the sum of the first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.A) $n^2$B) $n^2 + 1$C) $2n^2$D) $n^2 - 1$✓ Correct Answer: Option A
19. Find the 20th term from the last term of the AP: 3, 8, 13, \dots, 253A) 153B) 158C) 163D) 168✓ Correct Answer: Option B
20. Subba Rao started work in 1995 at an annual salary of ₹5000 and received an increment of ₹200 each year. In which year did his income reach ₹7000?A) 2003B) 2004C) 2005D) 2006✓ Correct Answer: Option C