Có mấy chữ a vay ha
0000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000c000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000000000
\(\text{7 chữ a,vay,ha,vs 4 chữ nữa}\)
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có 4 chữ a ( không tính trên đề )
vá 1 chữ c
có bốn chữ a với lại một chữ c ( ko tính đề ) đó bạn