A Non-Resident Indian (NRI) wants to buy an apartment in India to use it when he returns home. He considers four factors—climate, infrastructure, resale value, and services—to make his decision. His friends recommended the cities Bangalore, Mumbai, and New Delhi as potential areas. Bangalore has many IT-related companies and mild weather; whereas Mumbai has beaches and international air connectivity; New Delhi is the capital of India with extremely hot summer and a cold winter. After conducting some research, he has created the following pairwise matrix.

a. Determine the priorities for the considered factors.
b. Check the pairwise comparisons for consistency.

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Weather (A) Infrastructure (B) Resale value (C) Services (D) Weather (A) 1 1/4 1/6 1/2 Infrastructure (B) 4 1 3 3 Resale value (C) 6 1/3 1 2 Services (D) 2 1/3 1/2 1