Question
Download Solution PDFFind the sum upto 155 term of the sequence 255, 264, 273, ...
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :
A sequence 255, 264, 273, ...
Formula used :
Sum in A.P, Sn = \(\dfrac{n}{2}\times [2a+(n-1)d]\)
Calculation :
n = 155 , a = 255 , d = 264 - 255 = 9
Sn = \(\dfrac{n}{2}\times [2a+(n-1)d]\)
Sn = \(\dfrac{155}{2}\times [2\times 255 + (155 - 1)9]\)
⇒\(\dfrac{155}{2}\times [510+1386]\)
⇒ 155 x 948 = 146940
∴ The answer is 146940.
Last updated on Jun 5, 2025
-> The UP Police Sub Inspector 2025 Notification will be released by 15th June for 4543 vacancies.
-> A total of 35 Lakh applications are expected this year for the UP Police vacancies..
-> The recruitment is also ongoing for 268 vacancies of Sub Inspector (Confidential) under the 2023-24 cycle.
-> The pay Scale for the post ranges from Pay Band 9300 - 34800.
-> Graduates between 21 to 28 years of age are eligible for this post. The selection process includes a written exam, document verification & Physical Standards Test, and computer typing test & stenography test.
-> Assam Police Constable Admit Card 2025 has been released.