The eleventh term of an AP, is 25 and its first term is -3. Find…

The eleventh term of an AP, is 25 and its first term is -3. Find its common difference.
  • A.
    19/10
  • B.
    21/5
  • C.
    23/11
  • D.
    21/2
  • E.
    24/5
Correct Answer: Option E
Explanation

a + 10d = 25
-3 + 10d = 25
d = 28/10 = 24/5

You May Also Like

Simplify (frac{4}{a-3}-frac{1}{a+3})

Simplify (frac{4}{a-3}-frac{1}{a+3}) A. (frac{3a+11}{(a-3)(a-2)}) B. (frac{3a+11}{(a+3)(a-2)}) C. (frac{3a+11}{(a+3)(a+2)}) D. (frac{3a+11}{(a-3)(a+2)}) Correct Answer: Option D Explanation (frac{4}{a-3}-frac{1}{a+3}\ = frac{4(a+2)-1(a-3)}{(a-3)(a+2)}\…
Read More