Question

Meaning:-
Black Color Is Sentimentally Bad
But
Every Black Board Makes
The Student Life Bright.
---- APJ Abdul Kalam. ​

Answer 1

Answer:

$\huge{\underline{\underline{Given→}}}$

$\rm\green{Observations=17,15,18,15,10}$

$\rm\green{No.of\:observations=5}$

$\huge{\underline{\underline{To\:Find→}}}$

$\rm\purple{Mean\:of\:the\:given\:data}$

$\huge{\underline{\underline{Answer→}}}$

${\boxed{\red{\dashrightarrow}{\rm{\red{Mean=\dfrac{\rm{\small{Sum\:of\:all\:observations}}}{\rm{\small{No.of\:observations}}}}}}}}$

$\rm\blue{→\bar{x}=\dfrac{17+15+18+15+10}{5}}$

$\rm\blue{→\bar{x}=\dfrac{75}{5}}$

$\rm\blue{→\bar{x}=\dfrac{\red{\cancel{\blue{75}}}}{\red{\cancel{\blue{5}}}}}$

$\rm\blue{→\bar{x}=15}$

${\boxed{\boxed{\rm{\pink{→\bar{x}=15✔}}}}}$

☞ Hence the mean of the given data is 15 which is the required answer.

HOPE IT HELPS.

Answer 2

Answer:

This is a famous quote from A . P.J Abdul Kalam which says that black is a symbol of negative or unlucky things but the same black board makes the student life to glow as in rainbow colors, from the same black board students life will be succeeded.  

Explanation:

• This APJ Abdul Kalam quotation.
• So, in Indian superstition, the color black is associated with bad luck.
• Similar to how we aren't allowed to wear black to weddings since it's supposedly a bad omen for the couple
• According to superstitions, black may be evil, but a black board (i.e., education) can help a child succeed, argues APJ Abdul Kalam.
• He experienced discrimination for his education when he was younger.

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