The reflection of the point `(2,-1,3) ` in the plane `3x-2y-z=9` is (A) `(28/7,15/7,17/7)` (B) `(26/7,-15/7,17/7)` (C) `(15/7,26/,-17/7)` (D) `(26/7,17/7,-15/70)`

7.The distance of the point P(1,7) from the y -axis is : (a) 1 (b) 7 (c) 6 (d) 8

If 8tan x=15, then sin x-cos x is equal to (8)/(17)( b) (17)/(7)( c) (1)/(17) (d) (7)/(17)

The equation of the plane passing through the point (1,1,-1) and perpendicular to the planes x+2y+3z-7=0 and 2x-3y+4z=0 is (a) 17 x+2y-7z=26 (b) 17 x-2y+7z=26 (c) 17 x+2y-7z+26=0 (d) 17 x-2y+7z+26=0

Which of the following is/are not Pythagorean triplet (s)? 3,4,5 (b) 8,15,17 7,24,25 (d) 13,26,29

3/7 xx 7/17

Which of the following are in descending order of their values? (5)/(9),(7)/(11),(8)/(15),(11)/(17) (b) (5)/(9),(8)/(15),(11)/(17),(7)/(11) (c) (11)/(17),(7)/(11),(5)/(15),(5)/(9)(d)(11)/(17),(7)/(11),(5)/(9),(8)/(15)

Which of the following is/are not Pythagorean triplet (s)? (a) 3,4,5 , (b) 8,15,17 (c) 7,24,25 (d) 13,26,29

The equation of the plane passing through the point (1,1,-1) and perpendicular to the planes x+2y+3z-7=0 and 2x-3y+4z=0 is 17x+2y-7z=2617x-2y+7z=2617x+2y-7z+26=017x-2y+7z+26=0

The quartile deviation of daily wages (in Rs.) of 7 persons given below is 12,7,15,10,17,17,25 is

The quartile deviation of daily wages (in Rs.) of 7 persons given below is 12, 7, 15, 10, 17,17, 25 is