Question
What is the sum of the first 14 terms of an arithmetic
progression if the first term is -21 and last term is 40?Solution
First term of AP = a = - 21 & last term = l = 40 Number of terms = n = 14 Sum of AP = n/2 (a + l) = 14/2 (- 21 + 40) => 19 x 7 = 133
Select the option that represents the letters that when sequentially placed from left to right in the blanks below, will complete the letter series.
...Select the option that represents the letters that, when placed from left to right in the same sequence in the blanks below, will complete the letter se...
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
a b _ d _ f g _ i _...
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
p _ _ _ q r _ ...
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
m _ _ _ n o _ ...
Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.
RQP, ONM, ____, IHG, FED, find the missing letters
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
G _ I _ K G H I _ K _ _ _ J K
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
OA, LG, IM, FS, (?)
...Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
g _ _ _ h i _ ...
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