INSTRUCTION: Answer all questions in the ANSWER BOOKLET
Part one: Circle the letter of the correct answer (50 marks)
1. cosAcosB - sinAsinB is
A. sin(A + B)
B. cos(A + B)
C. cos(A - B)
D. sin AcosB
2. The exact value of cos30° By using half angle formula is
2
A.
√2
B.
2
C.
√3
D.
2
3. The probability of failing exam is P(F) = 0.1, then the probability of passing exam is
A. 0.8
B. 0.9
C. 0.7
4. The number of ways that five textbooks can be arranged on a shelf is
D. 0.6
A. 140
5. The imaginary part of the complex number
B. 120
C. 130
D. 150
Z₁ =2+31 is
A. Im(z):
= 2
B. Im(z) = 31
C. Im(z) = i
D. Im(z) =3
6. If z₁ = 2-5i and Z₂ = 1+4i then the addition of Z₁ and Z2 is
A. 4-i
B. 3+1
C. 3-i
D. 4+i
7. The marks of Maryam of six subjects in standard eight class was 24,26,35, 28, 50, 14 The range
is
A. 16
B. 36
C. 18
D. 34
8. If the variance of a data was 49, then the standard deviation is
A. 49
B. 48
9. The exact value of limo 18 equals
A. 0
B. 1
C. 7
D. 6
C. 180
D. 18
10. The exact value of this lim x-- (2-1) will be:
A. 1
B.
C. 2
D. -2
Page 1 of
​