Ncert- class10-Maths – Pair of Linear Equation in two variables Welcome to your Ncert- class10-Maths - Pair of Linear Equation in two variables 1. Aruna has only £1 and £2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is £75, then the number of $1 and $2 coins are, respectively 35 and 20 35 and 15 25 and 25 15 and 35 None 2. The 2 digit number which becomes 5/6 th of itself when its digits are reversed. The difference in the digits of the number being 1, then the two digits number is 36 54 None of these 45 None 3. The pair of equations x+2y+5=0 and -3x-6y+1=0 has infinitely many solutions exactly two solutions a unique solution no solution None 4. The pair of equations y =0 and y =-7 has infinitely many solutions two solutions one solution no solution None 5. If a pair of linear equations is consistent, then the lines will be parallel always coincident intersecting or coincident always intersecting None 6. The value of c for which the pair of equations cx-y =2 and 6x-2y =3 will have -12 -3 3 no value None 7. One equation of a pair of dependent linear equations -5x +7y=2 The second equation can be 10x-14y=-4 10x+14y+4=0 -10x-14y+4=0 -10x+14y+4=0 None 8. x and y are 2 different digits. If the sum of the two digit numbers formed by using both the digits is a perfect square, then value of x+y is 11 13 10 12 None 9. For what value of k, do the equations 3x -y+8=0 and 6x-ky=-16 represent coincident lines ? -2 1/2 -1/2 2 None 10. The value of k for which the system of linear equations x+2y =3, 5x+ky+7=0 is inconsistent is 5 10 2/5 -14/3 None 11. The pair of linear equations 2kx +5y = 7, 6x-5y =11 has a unique solution, if k≠-3 k≠2/9 k≠5 k≠-2/3 None 12. A fraction becomes 4 when 1 is added to both the numerator and denominator and it becomes 7 when 1 is subtracted from both the numerator and denominator. The numerator of the given fraction 15 5 2 3 None 13. For which value(s) of p, will the lines represented by the following pair of linear equations be parallel 3x-y-5=06x-2y-p=0 1/2 10 5/2 all real values except 10 None 14. The value of k for which the system of equations x+y-4=0 and xky 2x+ky=3 , has no solution, is 2 3 -2 ≠2 None 15. If 3x +4y : x +2y =9 :4 then 3x+5y:3x-y is equal to 1 : 4 4 : 1 7 : 1 1 : 7 None 16. In a number of two digits, unit’s digit is twice the tens digit. If 36 be added to the number, the digits are reversed. The number is 84 36 48 63 None 17. The pair of equations 3^x+y =81^x-y =3 has unique solution x=2(1/8), y =1(7/8) infinitely many solutions no solution None 18. If the lines given by 3x+2ky =2 and 2x +5y+1 =0are parallel, then the value of k is 15/4 -5/2 3/2 2/5 None 19. The pair of equations x = a and y =b graphically represents lines which are coincident intersecting at (a, b) intersecting at (b, a) parallel None 20. If x= a and y =b is the solution of the equations x-y =2 and x+y =4 , then the values of a and b are, respectively 3 and 5 5 and 3 3 and 1 -1 and -3 None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
