Question

The pair of linear equations x + 2y = 3, 5x +K y +7 = 0 has a unique solution if ,

(i) k 1 (ii) k 10 (iii) k 15 (iv) k 5

(b) The pair of linear equations x +y = 4 and 3x +2y =10 has____

(i) unique solution (ii) no solution (iii) > 2 solutions (iv) infinitely many solutions.

(c) Mathesh has Rs.1 and Rs.2 coins in his purse. If in all he has 9 coins totaling

Rs.15, the number of coins of each type he has are__, ___. (i) 2,8 (ii)3,6 (iii) 5,5 (iv) 6,3

(d).The sum of numerator and denominator of a fraction is 8. If 7 is added to the

denominator , the fraction becomes



. The fraction is ____. (i)



(ii)



(iii)



(iv)



(e) The difference between a two digit number and the number obtained by interchanging the

digits is 36. What is the difference between the two digits of the number? (i)3 (ii)5 (iii) 5/4 (iv) 5/2​

Answer 1

Answer:

Sorry but I don't know the answer of this.

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Answer 2

Answer:

1.i.

2.iv.

3.iv.

4.i.

5 . don't know

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