71.

The shadow of a tower when the angle of elevation of the sun is 45°, is found to be 10 m longer than when it was 60°. The height of the tower is

• 5( √3 - 1 ) m

• 5( √3 + 3 ) m

• 10( √3 - 1 ) m

• 10( √3 + 1 ) m

The following pie diagram gives the marks scored by a student in different subjects - English, Hindi, Mathematics, Science and Social science in an examination. Assuming that the total marks obtained for the examination are 540, answer the questions.


The marks scored in English, Science and Social Science exceed the marks scored in Hindi and Mathematics by:

• 25%

• 

• 11%

• 11%

The following pie diagram gives the marks scored by a student in different subjects - English, Hindi, Mathematics, Science and Social science in an examination. Assuming that the total marks obtained for the examination are 540, answer the questions.


The subject in which the student scored 105 marks is

• English

• Hindi

• Mathematics

• Mathematics

The following pie diagram gives the marks scored by a student in different subjects - English, Hindi, Mathematics, Science and Social science in an examination. Assuming that the total marks obtained for the examination are 540, answer the questions.


The difference of marks between English and Science is the same as between

• Science and English

• Hindi and Social Science

• English and Hindi

• English and Hindi

The following pie diagram gives the marks scored by a student in different subjects - English, Hindi, Mathematics, Science and Social science in an examination. Assuming that the total marks obtained for the examination are 540, answer the questions.


The marks scored in Hindi and Mathematics exceed the marks scored in English and Social Science by

• 30

• 40

• 60

• 75