1. The following linear equations Зx + 4y = 15 and 15x + 20y = 75 have :-

infinite solution

unique solution

finite solution

no solution

2. If the ratio of two numbers is 2 : 1 and their product is 1800, then the greater number is:

120

60

90

30

3. When a number is divided by another number, the remainder is 23. When twice of this number is divided by the same divisor the remainder is 11. The divisor is :

36

35

34

20

4. On dividing a number by 13, we get 1 as remainder. If the quotient is divided by 5, we get 3 as a remainder. If this number is divided by 65, what will be the remainder?

40

18

28

16

5. Find three rational numbers between 2.5 and 3.

2.65, 2.70 1001071...., 2.75

2.8, 0, 2.75

2.625, 2.75, 2.875

None of these.

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