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1-:(-5)/7= 2/7 (b) 5/7 -2/7 (d) (-7)...

`1-:(-5)/7=` `2/7` (b) `5/7` `-2/7` (d) `(-7)/5`

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A point on the line (x-1)/1=(y-2)/2=(z+1)/3 at a distance sqrt(6) from the origin is (A) ((-5)/7, (-10)/7,13/7) (B) (5/7,10/7,(-13)/7) (C) (1,2,-1) (D) (-1,-2,1)

A fraction equivalent to (45)/(105) is 6/(14) (b) 4/7 (c) 5/7 (d) 7/5

2 3/5-:5/7=\ (13)/7 (b) (13)/(25) (91)/(25) (d) (25)/(91)

The arrangement of rational numbers (-7)/(10),(5)/(-8),(2)/(-3) in ascending order is (2)/(-3),(5)/(-8),(-7)/(10) (b) (5)/(-8),(-7)/(10),(2)/(-3) (c) (-7)/(10),(5)/(-8),(2)/(-3)(d)(-7)/(10),(2)/(-3),(5)/(-8)

5/4-7/6-(-2)/3=\ 3/4 (b) -3/4 (-7)/(12) (d) 7/(12)

Find the difference: (i) 5/7-2/7 (ii) 5/6 - 3/4 (iii) 3 1/5-7/10 (iv) 7-4 2/3 (v) 3 3/10-1 7/15 (vi) 2 5/9-1 7/15

The probability that a non-leap year has 53 sundays,is (2)/(7) (b) (5)/(7)(c)(6)/(7) (d) (1)/(7)

A number x is chosen at random from the numbers -3,-2,-1,0,1,2,3 the probability that |x|<2 is (5)/(7) (b) (2)/(7)(c)(3)/(7) (d) (1)/(7)

(2/3)^(-5)x\ (5/7)^(-5) is equal to (2/3x5/7)^(-10) (b) (2/3x5/7)^(-5) (c) (2/3x5/7)^(25) (d) (2/3x5/7)^(-25)

If projections of as line on x,y and z axes are 6,2 and 3 respectively, then directions cosines of the lines are (A) (6/2,2/7,3/7) (B) (3/5,5/7,6/7) (C) (1/7,2/7,3/7) (D) none of these

RD SHARMA-OPERATIONS ON RATIONAL NUMBERS-All Questions
  1. If 24 trousers of equal size can be prepared in 54 metre of cloth, ...

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  2. Insert 10 rational numbers between (-3)/(11)\ a n d8/(11)dot

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  3. Insert 100 rational numbers between (-3)/(13)\ \ a n d\ 9/(13)

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  4. Find six rational numbers between (-4)/8\ a n d3/8

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  5. Find 10 rational numbers between 7/(13)\ a n d\ (-4)/(13)

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  6. State true or false: Between any two distinct integers there is alw...

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  7. What should be added to (-7)/9\ to get 2? (11)/9\ (b) (-11)/9 (-25...

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  8. What should be subtracted from (-2)/3\ to get 4/5? (22)/(15)\ (...

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  9. Reciprocal of (-3)/4 is (a)3/4 (b) 4/3 (c)(-4)/3 (d) None of these

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  10. The multiplicative inverse of 4/(-5) is -4/5 (b) 5/4 5/(-4) (d) ...

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  11. 1-:(-5)/7= 2/7 (b) 5/7 -2/7 (d) (-7)/5

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  12. (-5)/(13)+?=-1 8/(13) (b) (-8)/(13) (-18)/(13) (d) (18)/(13)

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  13. 0-:3/5= 0 (b) 5/3 3/5 (d) -3/5

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  14. -2 3/7+4=? (-11)/7 (b) (11)/7 (-45)/7 (d) (45)/7

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  15. If the product of two non-zero rational numbers is 1, then they are ...

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  16. The product 3 1/7xx1 5/6xx1 2/5xx1 1/(11) is equal to 5 8/5 (b) 5 4/5...

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  17. 1-:1/3= 1/3 (b) 3 1 1/3 (d) 3 1/3

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  18. (-2)-:(-5/3)= 5/6\ (b) -5/6 6/5 (d) (-6)/5

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  19. If x/2+1/3=1, then x= 3/4 (b) 4/3 -3/4 (d) (-4)/3

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  20. 5/4-7/6-(-2)/3=\ 3/4 (b) -3/4 (-7)/(12) (d) 7/(12)

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