quy đồng mẫu số thành 64 rồi cộng.
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Các câu hỏi tương tự
1+1+2+2+4+4+8+8+16+16+32+32+64+64=?
bk nha@ >_0
1/2 + 1/4+1/8+1/16+1/32+1/64
B=1/2+1/4+1/8+1/16+1/32+1/64
1/2+1/4+1/8+1/16+1/32+1/64
1/2+1/4+1/8+1/16+1/32+1/64=
1/2+1/4+1/8+1/16+1/32+1/64
Tính nhanh :
1/2+1/4+1/8+1/16+1/32+1/64
1+1/2+1/4+1/8+1/16+1/32+1/64 = ?
C = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128