Ans:B. 2 (Parietal lobe)
Brain part damaged leading to inability to do mathematical calculations is Parietal lobe.
- It is an acquired impairment in which patients have difficulty performing simple mathematical tasks, such as adding, subtracting, multiplying and even simply stating which of two numbers is larger.
- Acalculia is distinguished from dyscalculia in that acalculia is acquired late in life due to neurological injury such as stroke, while dyscalculia is a specific developmental disorder first observed during the acquisition of mathematical knowledge.
- Acalculia is associated with lesions of the parietal lobe (especially the angular gyrus)