Numerical AbilitySequence and Series (CSIR (Council of Scientific & Industrial Research) Part A Aptitude): Questions 30  34 of 34
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Question number: 30
» Numerical Ability » Sequence and Series
Question
The term of an A. P. is and its term is . Find its third term and common difference respectively.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 31
» Numerical Ability » Sequence and Series
Question
What should the next number
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  142.63  
d. 

Question number: 32
» Numerical Ability » Sequence and Series
Question
The present age of Soham is of his father’s present age. Soham’s brother is 3 years older than him. The respective ratio between the present ages of Soham’s father and brother is . What is the present age of Soham?
Choices
Choice (4)  Response  

a.  8 years  
b.  12 years  
c.  16 years  
d.  21 years 
Question number: 33
» Numerical Ability » Sequence and Series
Appeared in Year: 2012
Question
See the following mathematical manipulations (December)
(i) Let
(ii) then
(iii)
(iv) [cancelling ( ) from both sides]
(v) [Putting ]
Which of the above is the wrong step?
Choices
Choice (4)  Response  

a.  (iii) to (iv)  
b.  (i)  
c.  (ii) to (iii)  
d.  (iv) to (v) 
Question number: 34
» Numerical Ability » Sequence and Series
Appeared in Year: 2012
Question
In a sequence every term is equal to the sum of all its pervious term (December)
If , then is
Choices
Choice (4)  Response  

a.  3  
b.  2  
c.  e  
d.  1 