Question

.1. If f : R R is defined by f(x) = x2

+ 2 then the pre image of 27 are


a. 0,5
b. 5, -5
c. 5, 0
d. 5 , - 5

2. The first term of an A.P whose 8th and 12th terms are 39 and 59 respectively is

a. 1
b. 6
c. 4
d.3

14. The total surface area of a hemi-sphere is how much times the square of its radius

a. 
b.4
c. 3
d. 2​

Answer 1

Answer:

a.0,5

b.1

c.4

d.3/4

I hope it helps you