What will come in the place of '?' in the following equation, if '+' and 'x' are interchanged and '-' and '÷' are interchanged?
17 + 77 -7 x 37 ÷ 47 =
A187
B167
C157
D177
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Read the following information carefully and answer the question given below
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Aravind, Bala, Chithra, Deepa, Hari, Maha, Madhu and Abi are sitting around a circle facing the center. Bala is third to the right of Maha and third to the left of Abi. Chithra is fourth to the left of Aravind. Aravind is not an immediate neighbour of Maha and Bala. Hari is not an immediate neighbour of Bala. Madhu is second to the right of Deepa.
Who is to the immediate left of Bala?