Simplify: a/(1-2a) + a/(1+2a) + 2a/(1+4a^2) + 16a^3 /(16a^4-1)
Simplify: a/(1-2a) + a/(1+2a) + 2a/(1+4a^2) + 16a^3 /(16a^4-1)
S.E.E. Solution
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Soln:
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... - Q. At what time will the compound interest payable half yearly on Rs 2400 be Rs 2646 at the 5% per 6 month?
Soln:
Given,
Principal (P) = Rs. 2400
Compound Amount (C.A.) = Rs. 2646
here,
5% for 6 months.
5/6 % for 1 month
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Q.Factorize: (a^2 - 1)(b^2-1) + 4ab?
(a^2-1)(b^2-1)+4ab
= a^2 b^2 - a^2 - b^2 +1+ 4ab
Now break 4ab into 2ab+2ab
= a^2 b^2 - a^2 - b^2 +1+ 2ab ... - The sum of the digits of two-digits number is 10. If 18 is added to the number , its digits are reversed. Find the number.
Soln:
Let the two digits number = 10x +y where
tens place digit = x
units place digit = yaccording to the first conditionx+y = 10.. ...
- If three children are born in a family, calculate the probability that all children are girls by drawing a tree diagram.
Soln:
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