In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.: In the Series 3, 9, 15, … what will be the 21st term ?
Clearly, 3 + 6 = 9, 9 + 6 = 15, .... So, the series is an A.P. in which a = 3 and d = 6. .'. 21st term = a + (21 -1)d = a + 20d = 3 + 20 * 6 = 123.
559 MCQ for effective preparation of the test of Logical Series of Logical Series section.
Read the MCQ statement: In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spa .... l be the 21st term ?, keenly and apply the method you have learn through the video lessons for Logical Series to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 75-12058.