Question

2) Find sum of all odd numbers 1 to 150
Solution: all odd number 1, 3, 5 ......... 149
a = 1; d = 2
For value of th= a + (n-1)d
149 = 1+ (n - 1-)
= 1 + 2n-2
149 = 2n - 1
2n = 149 + 1
2n = 150
.. n =
5. = 9 (4+)
z (1+0)
3) Form the quadratic equation if a = -3 B = 10
Sol
..(a + b)x+ B = 0
(O+D+C =0
rox+0=0
x 7x+ 0-0
quadratic eq is​

Answer 1

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Answer 2

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