please yesterday I have posted my questions than anybody have not given the answer maybe you all can give please it's very urgent
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1.a)500/10*428+281-189
=50*428+281-189
=21400+218-189
=21618-189
=21429
b)782561/94
=8325.1170212765957446808510638298
c)4/9*810
=4*90
=360
d)1/4,3/8,7/16,2/3
LCM=48
1/4=12/48
3/8=18/48
7/16=21/48
2/3=32/48
increasing order=12/48,18/48,21/48,32/48
=1/4,3/8,7/16,2/3
2.solve
a) 2 |__102
3 |__51
17 |__17
all the factor of 102 are 1,2,3,6,17,34,51,102
b)LCM of 18,24,45
3 |__18,24,45
2 |__6,8,15
3 |__3,4,15
|__1,4,5
LCM=2*2*2*3*3*5
=8*9*5
= 360
c) 9th multiple of 19=9*19
=171
2nd multiple of 15=2*15
=30
171+30=201
d)144/216
=72/108
=36/54
=18/27
=6/9
=2/3
e) product of 2009*99
=2009*100-2009
=200900-2009
=198891