1. When n is divided by 6, the remainder is 4. When 2n is divided by 6, the remainder is

1

2

0

4

2. The smallest among the numbers

2230, 3150, 5100 and 4200 is

2250

4200

5100

3150

3. If A : B = 3 : 4 and B : C = 6 : 5, then C : A is

9 : 8

10: 9

9 : 10

8 : 9

4. The ratio of boys and girls in a college is 5: 3. If 50 boys leave the college and 50 girls join the college, the ratio becomes 9 : 7. The number of boys in the college is

600

300

400

500

5. If a number is increased by 25% and the resulting number is decreased by 25%, then the percentage increase or decrease finally is

increased by 6%

no change

decreased by 6 ¼%

increased by 6 ¼%

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