In following number series, two terms have been put within brackets. Choose the appropriate option - In the series 357, 363, 369, ..., what will br the 10th term ?
Answer: B. 411
(Use Arithmetic Progression)
The given series is an A.P. in which a = 357 and d = 6. .'. 10th term = a + (10 - 1) d = a + 9d = (357 + 9 x 6) = (357 + 54) = 411. Hence, the answer is (b).