If AP series is 1, 3, 5, 7, ..... find the sum of the 5th term
Answers
Step-by-step explanation:
Option B is correct. The present perfect tense is written as: have/has + past participle of the verb. In the given sentence, "received" is the simple past tense of the infinitive "to receive". Moreover, the sentence is in first person singular which means that "have" must be used here. Moreover, the present perfect cannot be used when you are being specific about when the action/event happened (a week ago). Thus, the resulting sentence is: I haOption B is correct. The present perfect tense is written as: have/has + past participle of the verb. In the given sentence, "received" is the simple past tense of the infinitive "to receive". Moreover, the sentence is in first person singular which means that "have" must be used here. Moreover, the present perfect cannot be used when you are being specific about when the action/event happened (a week ago). Thus, the resulting sentence is: I have received his letter.
AP : 1, 3, 5, 7, ...
a = 1
d = 3 - 1 = 2
a_5 = a + (n - 1)d
= 1 + 4(2)
= 9
S_n = n/2 [a + a_n]
= 5/2 [1 + 9]
= 25
Therefore, sum of 5 terms = 25