MEDIUM
11th West Bengal Board
IMPORTANT
Earn 100

150 workers were engaged to finish a piece of work in a certain number of days. Four workers dropped the second day, four more workers dropped the third day and so on. It takes 8 more days to finish the work now. Find the number of days in which the work was completed.( Write the answer in days.)

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Important Questions on Sequence and Series

MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 7
Two cars start together in the same direction from the same place. The first goes with uniform speed of 40 km/hr. The second goes at a speed of 36 km/hr in the first hour and increases the speed by 1 km each succeeding hr. After how many hrs will the second car overtake the first car if both cars go non-stop? (Write the answer in hrs)
HARD
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 8
There are 30 trees at equal distances of 5 m in a line with a well, the distance of the well from the nearest tree being 10 m. A gardener waters all the trees separately starting from the well and he returns to the well after watering each tree to get water for next. Find the total distance the gardener will cover in order to water all the trees. (Write the answer in m)
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 9
A sum of ₹62400 is paid off in 30 Instalments such that each Instalment is ₹100 more than the preceding Instalment. Calculate the first Instalment. (Write the answer in ₹)
HARD
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 10
A circle is completely divided into n sectors in such a way that the angles of the sectors are in A.P. If the smallest of these angles is 8° and the largest is 72°, calculate n and the angle in the fifth sector.
HARD
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 11
The interior angles of a polygon are in A.P. The smallest angle is 52° and the common difference is 8°. Find the number of sides of the polygon.
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7C>Q 12
The digits of a three-digit number are in A.P and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number.
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7D>Q 1
Find A.M between: 9 and 19
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 9 - Sequence and Series>EXERCISE 7D>Q 1
Find A.M between: 12 and −8