In an arithmetic progression, first term a=13 and common difference d=-4. Find the sum of the first 9 terms.

  • -31
  • 27
  • -40
  • -27
  • -27


In an arithmetic progression, first term a=8 and common difference d=3. Find the sum of the first 14 terms.

  • 385
  • -385
  • 388
  • 377
  • 385

In an arithmetic progression, first term a=10 and common difference d=4. Find the sum of the first 19 terms.

  • 878
  • 864
  • 874
  • -874
  • 874

In an arithmetic progression, first term a=1 and common difference d=-2. Find the sum of the first 19 terms.

  • 323
  • -323
  • -324
  • -325
  • -323

In an arithmetic progression, first term a=-1 and common difference d=-4. Find the sum of the first 23 terms.

  • 1035
  • -1035
  • -1034
  • -1039
  • -1035


In an arithmetic progression, first term a=7 and common difference d=6. Find the sum of the first 14 terms.

  • 650
  • 644
  • 637
  • -644
  • 644

In an arithmetic progression, first term a=-1 and common difference d=5. Find the sum of the first 24 terms.

  • -1356
  • 1357
  • 1356
  • 1361
  • 1356