WebJul 25, 2024 · Mohammed Owais. 2 years ago. Its bcoz, (Ref=n/2) the sum of any 2 terms of an AP is divided by 2 gets it middle number. example, 3+6/2 is 4.5 which is the middle of these terms and if you … WebThe nth term of an arithmetic sequence is given by : an=a1+(n−1)d an = a1 + (n−1)d. To find the nth term, first calculate the common difference, d. Next multiply each term number of the sequence (n = 1, 2, 3, …) by the common difference. Then add or subtract a number from the new sequence to achieve a copy of the sequence given in the ...
In an AP, if d = -4, n = 7, an = 4, then a is, a. 6, b. 7, c. 20, d. 28
WebJul 7, 2024 · In an AP, if d = –4, n = 7, a n = 4, then a is (A) 6 (B) 7 (C) 20 (D) 28 Answer: (D) Explanation: For an A.P a n = a + (n – 1)d 4 = a + (7 – 1) ( −4) 4 = a + 6... WebIn the given AP, the first term is a = 7 and the common difference is d = 4. Let us assume that 301 is the n th term of AP. Then: T n = a + (n - 1)d 301 = 7 + (n - 1) 4 301 = 7 + 4n - 4 … dfo forest officer
In an AP, if the common difference (d) = – 4, and the seventh term …
WebIn an AP, if d = –4, n = 7, an = 4, then a is (A) 6 (B) 7 (C) 20 (D) 28 Solution: (D) 28 Explanation: We know that nth term of an AP is a n = a + (n – 1)d where, a = first term a n is nth term d is the common difference According to the question, 4 = a + (7 – 1) (- 4) 4 = a – 24 a = 24 + 4 = 28 2. WebAn arithmetic progression (AP) is a sequence where the two consecutive terms have the same common difference. In an AP if a = -7.2, d = 3.6, an = 7.2, then n is 5 ☛ Related Questions: In an AP, if d = -4, n = 7, an = 4, then a is, a. 6, b. 7, c. 20, d. 28 In an AP, if a = 3.5, d = 0, n = 101, then aₙ will be, a. 0, b. 3.5, c. 103.5, d. 104.5 Webn th term of an AP is T n =a+ (n−1)d For an AP with the first term as 'a' and common difference as 'd', the seventh term is a + 6d. According to the question, the common difference (d) is −4 and the seventh term (a 7) is 4. So, a + 6d will be ⇒ a + 6 (−4) = 4 ⇒ a = 28 Hence, the first term is 28. Concept: nth Term of an AP dfo fixed refine or reinforce