1. If the number 72a47b is completely divisible by 45 but not by 10, then find ‘a’?
(a) 3
(b) 2
(c) 5
(d) 0
2. The value of -12 + 22 – 32 +42 – 52………………+2002 is
(a) 20100 (b) 12010
(c) 24010 (d) None of these
(a) 10% (b) 20 %
(c) 4 % (d) 5%
4. The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is—
(a) 1 (b) 2
(c) 3 (d) None of these
5. The percentage increases of population for three consecutive years in a country are 10%, 25% and 10% respectively. What is the total percentage increase for the three years?
(a) 51.25 % (b) 25 .25%
(c) 30.25% (d) 61%
6. If sec(7θ+28°)=cosec(30°-3θ), then find θ?
(a) 8° (b) 5°
(c) 6° (d) 9°
7. Find the value of cos 240 + cos550 + cos1250 + cos1560
(a) 0 (b) 2
(c) 3 (d) 1
8. Find the value of (sin5 + cos85)/ (sin5 – cos85)
(a) 1 (b) 0
(c) ∞ (d) None of these
9. A copper wire is bent in the form of an equilateral triangle and has area 121Ö3 cm2 if the same wire is bent into the form of a circle, the area ( in cm2) enclosed by the wire is ( Take )
(a) 364.5 (b) 693.5
(c) 346.5 (d) 639.5
10. A road which is 7 m wide surrounds a circular track whose circumference is 352 m. Find the area of the road.
(a) 2618 m2 (b) 2520m2
(c) 2025m2 (d) None of these
ANSWER KEY:
1. B
2. A
3. C
4. B
5. A
6. A
7. A
8. C
9. C
10.A
ANSWER KEY:
1. B
2. A
3. C
4. B
5. A
6. A
7. A
8. C
9. C
10.A
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