Question

1+1+1+...…+ n terms=........
A)n/2
B)n
C)n-1
D)none​

Answer 1

Answer:

here to find answer is with two ways (as i know)

1 is logical and second one is with sum of AP series

1+1+1+1+1+1+….n time

see here you can se 1+1=2 (first two numbers)

2+1=3 (sum of first two numbers +third number)

so by going this way the last two terms will be

(n-1)+1=n

second way to do so,

sum of AP= n/2{a+l}……(n is number of terms, a is first number and l is last number)

so in the given equation (1+1+1+1…n terms)

sum,

=n/2{1+1}

=n/2{2}

=n

Answer 2

1 + 1 + 1 + 1 + .......... + n terms

= 1 × n

= n

Hence, the correct answer is (B) n.