Question

I invest Rs. 12,805 in the 4% stock at Rs.
98-%. When they have risen to Rs. 1025/8%, I sell and reinvest the proceeds at Rs. 1055/8% in 41/2 find the change in my income brokerage being 25paise per share
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Answer 1

Answer:

his works on mathematical and physical subjects are so numerous and varied that he is considered to be an encyclopedia writer in these fields