Question
Download Solution PDF2 + 22 + 23 + 24 + ..... + 28 = ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
2 + 22 + 23 + 24 + ..... + 28 = ?
Formula used:
Sum of geometric series: {a × (r8 - 1)}/(r - 1)
Where,
a = first term, r = common ratio, n = number of terms
Calculation:
Here, a = 2, r = 2, and n = 8
S = 2 × {(28 - 1)}/(2 - 1)}
⇒ S = 2 × (256 - 1) / (2 - 1)
⇒ S = 2 × (255) / (1)
⇒ S = 2 × 255
⇒ S = 510
∴ The correct answer is option (1).
Last updated on May 9, 2023
(Village Revenue Officer) Recruitment 2023 will be announced soon by the Telangana Public Service Commission (TSPSC). The expected number of vacancies is around 700. The candidate must have completed the Intermediate Public Examination. The candidate must be between the ages of 18 and 44. The TSPSC VRO Syllabus and Exam Pattern form can be found here. It will assist them in streamlining their preparation.