Các câu hỏi tương tự
1x2x3 + 2x4x6 + 3x6x9/2x3x4 + 4x6x8 + 6x9x12
1x2x3+2x4x6+3x6x9+4x8x12/2x3x4+4x6x8+6x9x12+8x12x16
Bài 5 : Tính nhanh : a , \(A=\frac{1x2x3+2x4x6+3x6x9}{1x3x5+2x6x10+3x9x15}\)
Bài 5 : Tính nhanh a , \(A=\frac{1x2x3+2x4x6+3x6x9}{1x3x5+2x6x10+3x9x15}\)
Tính tổng: 1/(2x4x6) + 1/(4x6x8) + 1/(6x8x10) +...+ 1/(96x98x100)
Tính nhanh
1/2x4x6 +1/4x6x8 + 1/6x8x10 + 1/8x10x12 + ...+ 1/96x98x100
Tính A\(\frac{1x2x3+2x4x6+4x8x12+8x16x24}{2x3x4+4x6x8+8x12x16+8x24x32}\)
1/2x4x6+1/4x6x8+1/6x8x10+......+1/50x52x54
tim A biet A = 1x2x3+2x4x6+4x8x12+8x16x24/2x3x4+4x6x8+8x12x16+16x24x32