Seven friends Mihika, Naveen, Anuj, Pihu, Arjun, Rahane and Sweta live in three different cities viz, Dehradun, Mumbai and Kanpur. All are working with seven different companies, viz TCS, IBM, Ericssion, Tech Mahindra, Vodafone, Cisco and Infosys, but not necessarily in the same order.
At least two friends work in the same city. Anuj works with Infosys in Mumbai. Arjun does not work with Tech Mahindra. Only Sweta lives in Dehradun along with Arjun. Rahane works with Ericssion and does not live in Mumbai. Naveen works with Vodafone but does not live in the same city as Rahane. Mihika does not live in Kanpur. Those who live in dehradun work neither with IBM nor with Cisco. None of those who live in Mumbai work with Cisco.
Solution :

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