Question

The sum of all numbers between
100 and 1000 which are divisible by
11 will be:
(a) 44550
(b) 66770
(c) 55440
(d) 33440​

Answer 1

Answer:

The answer is (a) 44550

Answer 2

Answer:

44550 IND.

Step-by-step explanation:

here arithmetic sequennce of .no divisible by 11 will be

110,121 , 132 ............990

difference d = 11 , a = 110 , l = 990

n = [(l - a)/d] +1= [(990-110)/11] + 1

n = 81

sum = n(a + l)/2 = 81(110+990)/2

= 44550

option (a) is correct