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11th West Bengal Board
IMPORTANT
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The sum of all positive integral multiples of 3 less than 100 is

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Important Questions on Sequences and Series (AP, GP, HP)

EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 35
How many terms of an AP 6,12,18,24,…  must be taken to make the sum 816?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 36
The sum of all 3-digit numbers divisible by 5 is
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 37
The sum of n terms of an AP is 3n2+2n. Its common difference is
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 38
The sum of n terms of an A.P. is 3n2+5n. Which of its terms is 164?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 39
If the sum of first m terms of an AP is the sum as the same as the sum of its first n terms then the sum of its firstm+n terms is 
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 40
If the mth term of an AP is 1n and the nth term is 1m then the sum of its mn terms is 
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 41
If the sum of first m terms is n and the sum of first n terms is m, then the sum of first m+n terms is
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 32 - Sequences and Series (AP, GP, HP)>EXERCISE 1>Q 42
If the sum of n terms of a progression be a quadratic expression in n then it is