Step 1: Understanding Bangladesh Gramin Bank
The Bangladesh Gramin Bank (BGG) was founded by Dr. Muhammad Yunus in 1970. The main goal of this bank was to provide microloans to poor people, especially women, in rural areas to help them create self-sustaining businesses and improve their living standards.
Step 2: Importance of BGG
This bank became a significant part of the economic development of Bangladesh and was awarded the Nobel Peace Prize in 2006 for its innovative approach to reducing poverty through microfinancing.
Step 3: Why the other options are incorrect
- (A) 1969: The bank was not founded in 1969. The foundation of BGG was done in 1970.
- (C) 1979: This is too late for the founding year of the bank.
- (D) 1967: This is an earlier year and doesn't correspond with the actual founding year of BGG.
Thus, the correct answer is option (B) 1970.
Find the unknown frequency if 24 is the median of the following frequency distribution:
\[\begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency} & 5 & 25 & 25 & \text{$p$} & 7 \\ \hline \end{array}\]
Two concentric circles are of radii $8\ \text{cm}$ and $5\ \text{cm}$. Find the length of the chord of the larger circle which touches (is tangent to) the smaller circle.