TRẢ LỜI:
27+29=56
21+72=93
CHÚC BN HOK TỐT
\(27+29=56\)
\(21+72=93\)
hok tốt
Tính nhanh:
21+22+23+24+25+26+27+28+29+30
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30=
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37=
tính 1*2*3*4*5*6*7*8*9*10*11*12*13*14*15*16*17*18*19*0*20*21*22*23*24*25*26*27*28*29*30*31*32
ai nhanh mình tích cho
19+24+35+76557+27+27+82+72+78+27+2+7+2+72+7+2+782+7+78+652+78+27+2+78+52+3627+8+627
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50=?
tính nhanh : 27 . 129 - 29 . 27 + 100 . 73
( 11 +19 ) + ( 21 + 29 ) _ ( 19 +11 )
