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Question
For an A.P., if a = 7 and d = 2.5 then t12 = ?
Options
37.5
34.5
28.2
44.5
Solution
34.5
Explanation:
Given: a = 7 and d = 2.5
t12 = a + (12 – 1)d
= 7 + (12 – 1) (2.5)
= 7 + (11) (2.5)
= 7 + 27.5
= 34.5
Thus, the value of t12 is 34.5.
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| Treasure Hunt is an exciting and adventurous game where participants follow a series of clues/numbers/maps to discover hidden treasure. Players engage in a thrilling quest, solving puzzles and riddles to unveil the location of the coveted prize. While playing a treasure hunt game, some clues (numbers) are hidden in various spots collectively forming an A.P. If the number on the nth spot is 20 + 4n, then answer the following questions to help the players in spotting the clues: |
- Which number is on first spot? 1
- Which spot is numbered as 112? 2
OR - What is the sum of all the numbers on the first 10 spots? 2
- Which spot is numbered as 112? 2
- Which number is on the (n – 2)th spot? 1
