एक मोटेतौर पर आकलन दीजिए:
(a) 439+334+4,317 (b) 1,08,734-47,599 (c) 8325-491 (d) 4,89,348-48,365

Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens) : (a) 439 + 334 + 4,317 (b) 1,08,734 – 47,599 (c) 8325 – 491 (d) 4,89,348 – 48,365 Make four more such examples.

Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate(by rounding off to nearest tens) :(a) 439 + 334 + 4,317 (b) 1,08,734 – 47,599 (c) 8325 – 491(d) 4,89,348 – 48,365Make four more such examples.

Three numbers are in the ratio 1:2:3 and their H.C.F.is 12. The numbers are (a) 4,8 ,12 (b) 5,10,15 (c) 10,20,30 (d) 12 ,24,36

A line 4x+y=1 passes through the point A(2,-7) and meets line BC at B whose equation is 3x -4y +1=0 , the equation of line AC such that AB=AC is (a) 52x +89y +519=0(b) 52x +89y-519=0 c) 82x +52y+519=0 (d) 89x +52y -519=0

A line 4x+y=1 passes through the point A(2,-7) and meets line BC at B whose equation is 3x -4y +1=0 , the equation of line AC such that AB=AC is (a) 52x +89y +519=0(b) 52x +89y-519=0 c) 82x +52y+519=0 (d) 89x +52y -519=0

A line 4x+y=1 passes through the point A(2,-7) and meets line BC at B whose equation is 3x -4y +1=0 , the equation of line AC such that AB=AC is (a) 52x +89y +519=0(b) 52x +89y-519=0 c) 82x +52y+519=0 (d) 89x +52y -519=0

A line 4x+y=1 passes through the point A(2,-7) and meets line BC at B whose equation is 3x -4y +1=0 , the equation of line AC such that AB=AC is (a) 52x +89y +519=0(b) 52x +89y-519=0 c) 82x +52y+519=0 (d) 89x +52y -519=0

Match the problems with the answers. (a) 128 xx 47 (b) 1.28 xx 4.7 (c) 12.8 xx 0.47 (d) 0.128 xx 4.7 (e) 6.016 (f) 6016 (g) 0.6016

Solve 48. 2xx2. 5xx2. 2+?=270 (a) 6.5 (b) 2.8 (c) 4.9 (d) 3.4 (e) 1.2

Find the coordinates of the foot of the perpendicular drawn from point A(1,0,3) to the join of points B(4,7,1)a n d C(3,5,3) . a) (5/3,7/3,17/3) b) (5,7,17) c) (5/7,-7/3,17/3) d) (-5/7,7/3,17/3)