On the R&B singles chart , the group scored a record seventy - one Top 40 singles , with fourteen of those reaching # 1 .
Thirty - seven of their singles reached the Billboard Top 40 in the US , with four of them reaching # 1 .
On the R&B singles chart , the group scored a record seventy - one Billboard Top 40   singles , with fourteen of those reaching # 1 .
Thirty - seven of their singles reached the Billboard Top 40 in the US , with four of them reaching # 1 .