Discuss Forum

1. a, b, c, d and e are five consecutive integers in increasing order of size. Which one of the following expression is not odd?

  • A. a+b+c
  • B. a+b+c
  • C. a+b+c
  • D. a+b+c

Answer: Option A

Explanation:

ধরি, a = 1, b = 2, c = 3, d = 4 এবং e = 5
.: a + b + c = 1 + 2 + 3 = 6 (জোড়)
.: ab + c = 1 x 2 + 3 = 5 (বিজোড়)
.:. ac + e = 1 x 3 + 5 = 8 (জোড়)
.:. ac + d = 1 x 3 + 4 = 7 (বিজোড়)
.:. বিজোড় হবে না a + b + c এবং ac + e

Post your comments here:

Name:
Mobile:
Email:(Optional)

» Your comments will be displayed only after manual approval.