Question

The 10thterm from the end of the A.P. -5, -10, -15,...,-1000 is

[]A.-945 B. -950 C. -955 D. -965

Answer 1

Step-by-step explanation:

Here write Answer is B.-950

Answer 2

Answer: -955

Step-by-step explanation:

Given A.P,

-5, -10, -15,....,-1000

Let write the given AP series in reverse order and find the 10th term from last

Then,

-1000,....,-15, -10, -5

Here, a [First term] = -1000

an [ Last term] = -5

d ( common diff.) = -10+15 = 5

n = 10

Now,

an = a+(n-1)d

a10 = -1000+(10-1) 5

= -1000 + 45

= -955

Therefore, the 10th term from the last of the given Ap is -955