Additive inverse of 1/7 is?
a) 0
b) 1
c) 1/7
d) -1/7
Explanation: An additive inverse of a number is the value, which on adding with the original number results in zero value.
20 milligram is equal to ____ kg.
a) 20 x 10-5
b) 20 x 10-6
c) 2 x 10-5
d) 2 x 10+6
Explanation: 1 kg = 1000000 mg
1mg (milligram) = 0.000001kg
20 milligram = 0.00002 kg
in scientific notation 0.00002 is 2 x 10-5
The final image formed by a compound microscope is ________
a) Real, Erect
b) Real, Invert
c) Virtual, Invert
d) Virtual, Erect
The simplest form of ac + ad + bc + bd is:
a) (a + b)(b + d)
b) ab(c + d)
c) bc(c + d)
d) (a + b)(c + d)
The factors of (4a2 – 16) are:
a) 4(a – 2)(a – 2)
b) 4(a – 2)(a + 2)
c) (a – 2)(a + 2)
d) 4(a + 2)(a + 2)
Explanation: 4a2 – 16
4(a2 – 4)
4( a2 – 22) since: a2 – b2 = (a - b)(a + b) therefore 4(a - 2)(a + 2)
Which from the following should be used to decrease minor inappropriate behaviour?
a) Praise
b) Reward
c) Ignorance
d) Strictness
