Question
If a, b, c are in continued proportion, then prove that, 1/b=1/(b-a) +1/(b-c)
If a, b, c are in continued proportion, then prove that
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Question
If x/(y+z) = y/(z+x) = z/(x+y), then show that each ratio is 1/2 or -1.
If = = , then show that each ratio is or -1.
Question
If x = √3 + √2 and y = 1/x then find (x + 1/x)² + (1/y – y)²
If x = √3 + √2 and y = 1/x then find (x + )² + ( – y)²
Question
If (√a + √b) ∝ (√a-√b) then show that (a + b) ∝ √(ab)
If (√a + √b) ∝ (√a-√b) then show that (a + b) ∝ √(ab)
Question
Speed of A is 1m/sec more than that of B. A reaches 2 seconds earlier than B in 180m sprint competition. Find the speed of B in m/sec.
Speed of A is 1 m/sec more than that of B. A reaches 2 seconds earlier than B in 180m sprint competition.…
Question
Aman has taken a loan of Rs. 25,000 for 3 years, in such a way that the compound interest for 1st year, 2nd year and 3rd year is 4%, 5% and 6% p.a. respectively. Find the amount be deposited after 3 years.
Aman has taken a loan of ₹ 25,000 for 3 years, in such a way that the compound interest for 1st year,…
Question
After retirement Gobinda Babu got ₹ 5,00,000. He deposited a part of it in post office at 7.2% simple interest p.a. and the other part in a bank at 6% simple interest p.a. Every year he got ₹ 33,600 in total as interest from bank and post office. Find the amounts he deposited in bank and post office separately.
After retirement Gobinda Babu got ₹ 5,00,000. He deposited a part of it in post office at 7.2% simple interest p.a. and…
Question
The mean of a frequency distribution is 7 and Σfx = 140, then find the value of Σf.
The mean of a frequency distribution is 7 and Σfx = 140, then find the value of Σf
Question
The length of the diagonal of each face of a cube is 6√2 cm. Find the total surface area of the cube.
The length of the diagonal of each face of a cube is 6√2 cm. Find the total surface area of the cube.