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Shark Tank

The killer question

An entrepreneur struggles to answer what Kevin O'Leary calls "the most important question in his life."

Tuesdays have more bite with back-to-back episodes of "Shark Tank" on CNBC every Tuesday night at 8 p.m. & 9 p.m. ET/PT.

Featured

Meet the Sharks

  • Mark is the highly successful entrepreneur and investor who founded HDNet, Broadcast.com and MicroSolutions.

  • Barbara Corcoran parlayed a $1,000 loan into a five-billion-dollar real estate business.

  • Lori Greiner started with one idea and turned it into a multi-million dollar international brand.