Question
In an arithmetic progression, the first term is 18, the
common difference is 6, and the total number of terms is 48. What is the sum of all the terms in this series?Solution
First term (a) = 18
Common difference (d) = 6
Number of terms (n) = 48
Required sum = (n/2){2a + (n – 1) × d}
= (48/2) × {2 × 18 + (48 – 1) × 6}
= 24 × (36 + 47 × 6) = 24 × (36 + 282)
= 24 × 318 = 7632
Which SQL clause is used to group rows based on one or more columns?
Which layer of the OSI model handles logical addressing and routing?
Which interrupt is generated by software?
When debugging a recursive function that processes a `Tree` data structure, what is a common strategy to identify infinite recursion or incorrect base c...
What will re.findall(r'\d+', 'abc123def45ghi') return?Â
Which constraint ensures that no duplicate values exist in a column?
Which normal form eliminates repeating groups by putting them into separate tables and connecting them through foreign keys?
Which SQL command is used to retrieve data from a table?
Which database model represents data in a tree-like structure, where each child record has only one parent?
Which normal form ensures no partial dependency of non-prime attributes on a candidate key?
Relevant for Exams:
