Question

in an AP the sum of its first ten terms is 150 and the sum next m terms is 550 find the P​

Answer 1

AP is    - 3 , 1 , 5 , ................

Step-by-step explanation:

Correct Question would be

in an AP the sum of its first 10 is 150 and the sum of  next 10 terms is 550 find the AP​

S₁₀  = 150

S₂₀ = 150 + 550 = 700

S₁₀ = (10/2)(2a  + 9d) = 150

=> 2a + 9d = 30

S₂₀ = (20/2)(2a + 19d) = 700

=> 2a + 19d = 70

=> 10d = 40

=> d = 4

2a + 9d = 30

=> 2a + 9*4 = 30

=> a = - 3  

a = - 3   d = 4

AP is   - 3 , 1 , 5 , ................

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