2^4.3^2.7+2^9.3^2+2^4.3^2.11
2^4.3^2.(7+2^5+11)
=16.9.359=51696
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Các câu hỏi tương tự
1 × 2 + 2 × 3 +3 × 4 + 4 × 5 + 5 × 6 + 6 × 7 + 7 × 8 + 8 × 9 + 9 × 10 + 10 × 11 +11 ×12 + 12 ×13 + 13×14 + 14×15 + 15×16 + 16×17 +17×18 + 18×19 + 19×20 + 20×21 + 21×22 + 22×23 + 23×24 + 24×25 + 25×26
Tính nhanh:
a,1/4+2/5+6/8+9/15+8/1
b,1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+10/20
c,1/10+4/20+9/30+16/40+25/50+36/60+49/70+64/80+81/90
Tính nhanh:
a,1/4+2/5+6/8+9/15+8/1
b,1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+10/20
c,1/10+4/20+9/30+16/40+25/50+36/60+49/70+64/80+81/90
6×7×8×9×10×11
22×20×18×16×14×12
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=
Tìm giá trị của 2+4+6+8+10+12+14+16+18+20+22
4/9 + 6/9 + 8/12 + 10/15 + 12/18 + 14/21=
tinh tong : A=2+4-6-8+10+12-14-16+18+20-22-24+.......+2004-2006-2008
Tính nhanh a) 6*7*8*9/18*16*14*12 b) 4*15*9*24/3*12*8*25