14
Initially, the Thomas Cup and the Uber Cup were held separately every 3 years. However, in 1984, both championships were merged into a single one and it was called the Thomas-Uber Cup, which would be held every how often?
Answer: 2 years
In 1984, the Thomas-Uber Cup was held in Kuala Lumpur, Malaysia. This championship was the 13th tournament of the Thomas Cup, and the 10th installment for the Uber Cup.