Question

X
A) Choose correct alternative and write the alphabet or IL
1) Find value of x
5
4 8
= 0
a) 40
b) 10
c) -10
d) 0
2) For 2x2 - 5x + V2 = 0 find value of the discriminant
a) -5
b) 17
c) 2
d) 212-5
3) Sum of first five multiples of 3 is ....
b) 55
c) 15
d) 75
4) Which number can not represent a probability ?
2
a
b) 2.5
d) 0.5
5
a) 45
C) 15%​

Answer 1

2) 25-8√2

3)45

4)2.5 and 45

I am unable to understand first question