Question

23. Sum of natural numbers from 1 to 100
(1) 4050
(2) 10100
(3) 5500
(4) 5050
24. The co-ordinates of point which intersects the line joining
the points (2,3) and (4, 5) in the ratio 1:2 internally
(1)
8 11
3: 3
(2) |
8 11
3. 3
8
11
(3)
3: 3
(4) None
25. In the following equations, line passing through origin is
(1) y=mx
(2) y=mx-C
(3) y = cx + m
(4) y=c
​

Answer 1

23) 4- 5050

25) 1- y = mx

Step-by-step explanation:

sum of first n natural numbers = n(n+1) /2

= 100(101)/2

=5050

Answer 2

Answer:

23) Ans= 4950

Step-by-step explanation:

a =1 , d=1 tn= 100

. tn = 1+ (n-1)* 1

. 100- 1 = n-1

100 = n

: S100 = 5O ( 100-1 )

- S100 = 50×99

S100 = 4950